Finding the Fourth Proportional to 91,585.72, 137,338.98 and 31,620.52

Step by Step Solution

1. Step 1: Write the proportion equation
   91,585.72 : 137,338.98 = 31,620.52 : x
2. Step 2: Convert to fraction form
   91,585.72/137,338.98 = 31,620.52/x
3. Step 3: Cross multiply
   91,585.72x = 137,338.98 × 31,620.52
4. Step 4: Simplify right side
   91,585.72x = 4,342,729,963.87
5. Step 5: Solve for x
   x = 4,342,729,963.87/91,585.72
6. Step 6: Final answer
   x = 47,417.11