Finding the Fourth Proportional to 113,153.28, 156,134.16 and 65,397.36

Step by Step Solution

1. Step 1: Write the proportion equation
   113,153.28 : 156,134.16 = 65,397.36 : x
2. Step 2: Convert to fraction form
   113,153.28/156,134.16 = 65,397.36/x
3. Step 3: Cross multiply
   113,153.28x = 156,134.16 × 65,397.36
4. Step 4: Simplify right side
   113,153.28x = 10,210,761,869.82
5. Step 5: Solve for x
   x = 10,210,761,869.82/113,153.28
6. Step 6: Final answer
   x = 90,238.32