Finding the Fourth Proportional to 76,479.27, 105,498.86 and 71,066.91

Step by Step Solution

1. Step 1: Write the proportion equation
   76,479.27 : 105,498.86 = 71,066.91 : x
2. Step 2: Convert to fraction form
   76,479.27/105,498.86 = 71,066.91/x
3. Step 3: Cross multiply
   76,479.27x = 105,498.86 × 71,066.91
4. Step 4: Simplify right side
   76,479.27x = 7,497,477,633.39
5. Step 5: Solve for x
   x = 7,497,477,633.39/76,479.27
6. Step 6: Final answer
   x = 98,032.81