Finding the Fourth Proportional to 117,870.10, 176,743.98 and 57,872.20

Step by Step Solution

1. Step 1: Write the proportion equation
   117,870.10 : 176,743.98 = 57,872.20 : x
2. Step 2: Convert to fraction form
   117,870.10/176,743.98 = 57,872.20/x
3. Step 3: Cross multiply
   117,870.10x = 176,743.98 × 57,872.20
4. Step 4: Simplify right side
   117,870.10x = 10,228,562,959.36
5. Step 5: Solve for x
   x = 10,228,562,959.36/117,870.10
6. Step 6: Final answer
   x = 86,778.27