Finding the Fourth Proportional to 57,187.59, 78,917.91 and 31,693.87

Step by Step Solution

1. Step 1: Write the proportion equation
   57,187.59 : 78,917.91 = 31,693.87 : x
2. Step 2: Convert to fraction form
   57,187.59/78,917.91 = 31,693.87/x
3. Step 3: Cross multiply
   57,187.59x = 78,917.91 × 31,693.87
4. Step 4: Simplify right side
   57,187.59x = 2,501,213,980.21
5. Step 5: Solve for x
   x = 2,501,213,980.21/57,187.59
6. Step 6: Final answer
   x = 43,737.01