Finding the Fourth Proportional to 88,139.55, 121,632.66 and 47,853.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,139.55 : 121,632.66 = 47,853.30 : x
2. Step 2: Convert to fraction form
   88,139.55/121,632.66 = 47,853.30/x
3. Step 3: Cross multiply
   88,139.55x = 121,632.66 × 47,853.30
4. Step 4: Simplify right side
   88,139.55x = 5,820,524,168.78
5. Step 5: Solve for x
   x = 5,820,524,168.78/88,139.55
6. Step 6: Final answer
   x = 66,037.60