Finding the Fourth Proportional to 61,099.31, 91,698.18 and 31,525.61

Step by Step Solution

1. Step 1: Write the proportion equation
   61,099.31 : 91,698.18 = 31,525.61 : x
2. Step 2: Convert to fraction form
   61,099.31/91,698.18 = 31,525.61/x
3. Step 3: Cross multiply
   61,099.31x = 91,698.18 × 31,525.61
4. Step 4: Simplify right side
   61,099.31x = 2,890,840,483.68
5. Step 5: Solve for x
   x = 2,890,840,483.68/61,099.31
6. Step 6: Final answer
   x = 47,313.80