Finding the Fourth Proportional to 71,770.47, 99,155.61 and 54,834

Step by Step Solution

1. Step 1: Write the proportion equation
   71,770.47 : 99,155.61 = 54,834 : x
2. Step 2: Convert to fraction form
   71,770.47/99,155.61 = 54,834/x
3. Step 3: Cross multiply
   71,770.47x = 99,155.61 × 54,834
4. Step 4: Simplify right side
   71,770.47x = 5,437,098,718.74
5. Step 5: Solve for x
   x = 5,437,098,718.74/71,770.47
6. Step 6: Final answer
   x = 75,756.77