Finding the Fourth Proportional to 91,881.17, 137,831.29 and 25,321.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,881.17 : 137,831.29 = 25,321.31 : x
2. Step 2: Convert to fraction form
   91,881.17/137,831.29 = 25,321.31/x
3. Step 3: Cross multiply
   91,881.17x = 137,831.29 × 25,321.31
4. Step 4: Simplify right side
   91,881.17x = 3,490,068,695.18
5. Step 5: Solve for x
   x = 3,490,068,695.18/91,881.17
6. Step 6: Final answer
   x = 37,984.59