Finding the Fourth Proportional to 91,499.12, 137,264.16 and 31,525.28

Step by Step Solution

1. Step 1: Write the proportion equation
   91,499.12 : 137,264.16 = 31,525.28 : x
2. Step 2: Convert to fraction form
   91,499.12/137,264.16 = 31,525.28/x
3. Step 3: Cross multiply
   91,499.12x = 137,264.16 × 31,525.28
4. Step 4: Simplify right side
   91,499.12x = 4,327,291,077.96
5. Step 5: Solve for x
   x = 4,327,291,077.96/91,499.12
6. Step 6: Final answer
   x = 47,293.25