Finding the Fourth Proportional to 71,763.76, 99,061.55 and 53,910.55

Step by Step Solution

1. Step 1: Write the proportion equation
   71,763.76 : 99,061.55 = 53,910.55 : x
2. Step 2: Convert to fraction form
   71,763.76/99,061.55 = 53,910.55/x
3. Step 3: Cross multiply
   71,763.76x = 99,061.55 × 53,910.55
4. Step 4: Simplify right side
   71,763.76x = 5,340,462,644.35
5. Step 5: Solve for x
   x = 5,340,462,644.35/71,763.76
6. Step 6: Final answer
   x = 74,417.26