Finding the Fourth Proportional to 749,136.53, 1,123,715.15 and 243,700.15

Step by Step Solution

1. Step 1: Write the proportion equation
   749,136.53 : 1,123,715.15 = 243,700.15 : x
2. Step 2: Convert to fraction form
   749,136.53/1,123,715.15 = 243,700.15/x
3. Step 3: Cross multiply
   749,136.53x = 1,123,715.15 × 243,700.15
4. Step 4: Simplify right side
   749,136.53x = 273,849,550,612.27
5. Step 5: Solve for x
   x = 273,849,550,612.27/749,136.53
6. Step 6: Final answer
   x = 365,553.59