Finding the Fourth Proportional to 91,064.52, 136,658.16 and 31,900.68

Step by Step Solution

1. Step 1: Write the proportion equation
   91,064.52 : 136,658.16 = 31,900.68 : x
2. Step 2: Convert to fraction form
   91,064.52/136,658.16 = 31,900.68/x
3. Step 3: Cross multiply
   91,064.52x = 136,658.16 × 31,900.68
4. Step 4: Simplify right side
   91,064.52x = 4,359,488,231.55
5. Step 5: Solve for x
   x = 4,359,488,231.55/91,064.52
6. Step 6: Final answer
   x = 47,872.52