Finding the Fourth Proportional to 113,145.48, 156,123.42 and 65,389.62

Step by Step Solution

1. Step 1: Write the proportion equation
   113,145.48 : 156,123.42 = 65,389.62 : x
2. Step 2: Convert to fraction form
   113,145.48/156,123.42 = 65,389.62/x
3. Step 3: Cross multiply
   113,145.48x = 156,123.42 × 65,389.62
4. Step 4: Simplify right side
   113,145.48x = 10,208,851,106.90
5. Step 5: Solve for x
   x = 10,208,851,106.90/113,145.48
6. Step 6: Final answer
   x = 90,227.65