Finding the Fourth Proportional to 113,144.74, 156,122.38 and 65,388.86

Step by Step Solution

1. Step 1: Write the proportion equation
   113,144.74 : 156,122.38 = 65,388.86 : x
2. Step 2: Convert to fraction form
   113,144.74/156,122.38 = 65,388.86/x
3. Step 3: Cross multiply
   113,144.74x = 156,122.38 × 65,388.86
4. Step 4: Simplify right side
   113,144.74x = 10,208,664,285.21
5. Step 5: Solve for x
   x = 10,208,664,285.21/113,144.74
6. Step 6: Final answer
   x = 90,226.60