Finding the Fourth Proportional to 71,675.78, 98,904.11 and 42,599.61

Step by Step Solution

1. Step 1: Write the proportion equation
   71,675.78 : 98,904.11 = 42,599.61 : x
2. Step 2: Convert to fraction form
   71,675.78/98,904.11 = 42,599.61/x
3. Step 3: Cross multiply
   71,675.78x = 98,904.11 × 42,599.61
4. Step 4: Simplify right side
   71,675.78x = 4,213,276,300.40
5. Step 5: Solve for x
   x = 4,213,276,300.40/71,675.78
6. Step 6: Final answer
   x = 58,782.43