diff --git a/MaximumNo4.c b/MaximumNo4.c
new file mode 100644
index 0000000..61378d9
--- /dev/null
+++ b/MaximumNo4.c
@@ -0,0 +1,19 @@
+// WAP to find out maximum out of three numbers using nested if..else.
+
+void main() {
+    int n1, n2, n3;
+    printf("Enter three numbers: ");
+    scanf("%d %d %d", &n1, &n2, &n3);
+
+    if (n1 >= n2) {
+        if (n1 >= n3)
+            printf("%d is the largest number.", n1);
+        else
+            printf("%d is the largest number.", n3);
+    } else {
+        if (n2 >= n3)
+            printf("%d is the largest number.", n2);
+        else
+            printf("%d is the largest number.", n3);
+    }
+}
diff --git a/MaximumNo4.exe b/MaximumNo4.exe
new file mode 100644
index 0000000..d2c57db
Binary files /dev/null and b/MaximumNo4.exe differ
diff --git a/Order Of Programs.md b/Order Of Programs.md
index cd8122f..15cf232 100644
--- a/Order Of Programs.md	
+++ b/Order Of Programs.md	
@@ -14,4 +14,5 @@
 |12        | SolveExpression2.c | SolveExpression2.exe | WAP to solve given expression "ans=a + b - (c*d) / f + g" |
 |13        | SolveExpression3.c | SolveExpression3.exe | WAP to solve given expression "ans = a / (a+b) - [ d * e / (f*g)]" |
 |14        | AgeCheck.c         | AgeCheck.exe         | WAP to check your age > 18 or not (using if else statement) |
-|15        | MaximumNo2.c | MaximumNo2.exe | WAP to find out maximum out of two numbers |
\ No newline at end of file
+|15        | MaximumNo2.c | MaximumNo2.exe | WAP to find out maximum out of two numbers |
+|16        | MaximumNo4.c | MaximumNo4.exe | WAP to find out maximum out of three numbers using nested if..else |
\ No newline at end of file