Finding the Fourth Proportional to 113,128.38, 156,108.06 and 65,384.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,128.38 : 156,108.06 = 65,384.82 : x
2. Step 2: Convert to fraction form
   113,128.38/156,108.06 = 65,384.82/x
3. Step 3: Cross multiply
   113,128.38x = 156,108.06 × 65,384.82
4. Step 4: Simplify right side
   113,128.38x = 10,207,097,403.65
5. Step 5: Solve for x
   x = 10,207,097,403.65/113,128.38
6. Step 6: Final answer
   x = 90,225.79