Finding the Fourth Proportional to 76,459.68, 105,471.82 and 71,047.31

Step by Step Solution

1. Step 1: Write the proportion equation
   76,459.68 : 105,471.82 = 71,047.31 : x
2. Step 2: Convert to fraction form
   76,459.68/105,471.82 = 71,047.31/x
3. Step 3: Cross multiply
   76,459.68x = 105,471.82 × 71,047.31
4. Step 4: Simplify right side
   76,459.68x = 7,493,488,564.45
5. Step 5: Solve for x
   x = 7,493,488,564.45/76,459.68
6. Step 6: Final answer
   x = 98,005.76