Finding the Fourth Proportional to 85,878.14, 128,825.71 and 29,710.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,878.14 : 128,825.71 = 29,710.31 : x
2. Step 2: Convert to fraction form
   85,878.14/128,825.71 = 29,710.31/x
3. Step 3: Cross multiply
   85,878.14x = 128,825.71 × 29,710.31
4. Step 4: Simplify right side
   85,878.14x = 3,827,451,061.67
5. Step 5: Solve for x
   x = 3,827,451,061.67/85,878.14
6. Step 6: Final answer
   x = 44,568.40