Finding the Fourth Proportional to 88,215.89, 121,736.43 and 47,930.29

Step by Step Solution

1. Step 1: Write the proportion equation
   88,215.89 : 121,736.43 = 47,930.29 : x
2. Step 2: Convert to fraction form
   88,215.89/121,736.43 = 47,930.29/x
3. Step 3: Cross multiply
   88,215.89x = 121,736.43 × 47,930.29
4. Step 4: Simplify right side
   88,215.89x = 5,834,862,393.46
5. Step 5: Solve for x
   x = 5,834,862,393.46/88,215.89
6. Step 6: Final answer
   x = 66,142.99