Finding the Fourth Proportional to 56,883.38, 85,258.62 and 42,798.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,883.38 : 85,258.62 = 42,798.15 : x
2. Step 2: Convert to fraction form
   56,883.38/85,258.62 = 42,798.15/x
3. Step 3: Cross multiply
   56,883.38x = 85,258.62 × 42,798.15
4. Step 4: Simplify right side
   56,883.38x = 3,648,911,207.55
5. Step 5: Solve for x
   x = 3,648,911,207.55/56,883.38
6. Step 6: Final answer
   x = 64,147.23