Finding the Fourth Proportional to 124,070.76, 185,858.28 and 57,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,070.76 : 185,858.28 = 57,420.72 : x
2. Step 2: Convert to fraction form
   124,070.76/185,858.28 = 57,420.72/x
3. Step 3: Cross multiply
   124,070.76x = 185,858.28 × 57,420.72
4. Step 4: Simplify right side
   124,070.76x = 10,672,116,255.56
5. Step 5: Solve for x
   x = 10,672,116,255.56/124,070.76
6. Step 6: Final answer
   x = 86,016.37