Finding the Fourth Proportional to 250,025.50, 375,077.31 and 81,506.71

Step by Step Solution

1. Step 1: Write the proportion equation
   250,025.50 : 375,077.31 = 81,506.71 : x
2. Step 2: Convert to fraction form
   250,025.50/375,077.31 = 81,506.71/x
3. Step 3: Cross multiply
   250,025.50x = 375,077.31 × 81,506.71
4. Step 4: Simplify right side
   250,025.50x = 30,571,317,533.75
5. Step 5: Solve for x
   x = 30,571,317,533.75/250,025.50
6. Step 6: Final answer
   x = 122,272.80