Finding the Fourth Proportional to 83,427.86, 125,140.74 and 20,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,427.86 : 125,140.74 = 20,248.50 : x
2. Step 2: Convert to fraction form
   83,427.86/125,140.74 = 20,248.50/x
3. Step 3: Cross multiply
   83,427.86x = 125,140.74 × 20,248.50
4. Step 4: Simplify right side
   83,427.86x = 2,533,912,273.89
5. Step 5: Solve for x
   x = 2,533,912,273.89/83,427.86
6. Step 6: Final answer
   x = 30,372.50