Finding the Fourth Proportional to 56,818.08, 85,556.76 and 42,131.04

Step by Step Solution

1. Step 1: Write the proportion equation
   56,818.08 : 85,556.76 = 42,131.04 : x
2. Step 2: Convert to fraction form
   56,818.08/85,556.76 = 42,131.04/x
3. Step 3: Cross multiply
   56,818.08x = 85,556.76 × 42,131.04
4. Step 4: Simplify right side
   56,818.08x = 3,604,595,277.83
5. Step 5: Solve for x
   x = 3,604,595,277.83/56,818.08
6. Step 6: Final answer
   x = 63,440.99