Finding the Fourth Proportional to 89,909.76, 123,978.24 and 61,248

Step by Step Solution

1. Step 1: Write the proportion equation
   89,909.76 : 123,978.24 = 61,248 : x
2. Step 2: Convert to fraction form
   89,909.76/123,978.24 = 61,248/x
3. Step 3: Cross multiply
   89,909.76x = 123,978.24 × 61,248
4. Step 4: Simplify right side
   89,909.76x = 7,593,419,243.52
5. Step 5: Solve for x
   x = 7,593,419,243.52/89,909.76
6. Step 6: Final answer
   x = 84,456.01