Finding the Fourth Proportional to 113,150.04, 156,175.08 and 65,431

Step by Step Solution

1. Step 1: Write the proportion equation
   113,150.04 : 156,175.08 = 65,431 : x
2. Step 2: Convert to fraction form
   113,150.04/156,175.08 = 65,431/x
3. Step 3: Cross multiply
   113,150.04x = 156,175.08 × 65,431
4. Step 4: Simplify right side
   113,150.04x = 10,218,691,659.48
5. Step 5: Solve for x
   x = 10,218,691,659.48/113,150.04
6. Step 6: Final answer
   x = 90,310.99