Finding the Fourth Proportional to 113,046.80, 156,011.96 and 65,302.16

Step by Step Solution

1. Step 1: Write the proportion equation
   113,046.80 : 156,011.96 = 65,302.16 : x
2. Step 2: Convert to fraction form
   113,046.80/156,011.96 = 65,302.16/x
3. Step 3: Cross multiply
   113,046.80x = 156,011.96 × 65,302.16
4. Step 4: Simplify right side
   113,046.80x = 10,187,917,973.83
5. Step 5: Solve for x
   x = 10,187,917,973.83/113,046.80
6. Step 6: Final answer
   x = 90,121.24