Finding the Fourth Proportional to 71,789.34, 99,096.03 and 61,677.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71,789.34 : 99,096.03 = 61,677.30 : x
2. Step 2: Convert to fraction form
   71,789.34/99,096.03 = 61,677.30/x
3. Step 3: Cross multiply
   71,789.34x = 99,096.03 × 61,677.30
4. Step 4: Simplify right side
   71,789.34x = 6,111,975,571.12
5. Step 5: Solve for x
   x = 6,111,975,571.12/71,789.34
6. Step 6: Final answer
   x = 85,137.65