Finding the Fourth Proportional to 71,711, 98,789.88 and 50,160.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,711 : 98,789.88 = 50,160.50 : x
2. Step 2: Convert to fraction form
   71,711/98,789.88 = 50,160.50/x
3. Step 3: Cross multiply
   71,711x = 98,789.88 × 50,160.50
4. Step 4: Simplify right side
   71,711x = 4,955,349,775.74
5. Step 5: Solve for x
   x = 4,955,349,775.74/71,711
6. Step 6: Final answer
   x = 69,101.67