Finding the Fourth Proportional to 71,705.91, 98,956.71 and 39,442.98

Step by Step Solution

1. Step 1: Write the proportion equation
   71,705.91 : 98,956.71 = 39,442.98 : x
2. Step 2: Convert to fraction form
   71,705.91/98,956.71 = 39,442.98/x
3. Step 3: Cross multiply
   71,705.91x = 98,956.71 × 39,442.98
4. Step 4: Simplify right side
   71,705.91x = 3,903,147,533.40
5. Step 5: Solve for x
   x = 3,903,147,533.40/71,705.91
6. Step 6: Final answer
   x = 54,432.72