Finding the Fourth Proportional to 88,264.32, 121,805.60 and 47,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   88,264.32 : 121,805.60 = 47,978.56 : x
2. Step 2: Convert to fraction form
   88,264.32/121,805.60 = 47,978.56/x
3. Step 3: Cross multiply
   88,264.32x = 121,805.60 × 47,978.56
4. Step 4: Simplify right side
   88,264.32x = 5,844,057,287.94
5. Step 5: Solve for x
   x = 5,844,057,287.94/88,264.32
6. Step 6: Final answer
   x = 66,210.87