Finding the Fourth Proportional to 71,611.57, 98,825.84 and 39,783.43

Step by Step Solution

1. Step 1: Write the proportion equation
   71,611.57 : 98,825.84 = 39,783.43 : x
2. Step 2: Convert to fraction form
   71,611.57/98,825.84 = 39,783.43/x
3. Step 3: Cross multiply
   71,611.57x = 98,825.84 × 39,783.43
4. Step 4: Simplify right side
   71,611.57x = 3,931,630,887.83
5. Step 5: Solve for x
   x = 3,931,630,887.83/71,611.57
6. Step 6: Final answer
   x = 54,902.17