Finding the Fourth Proportional to 112,577.31, 168,766.61 and 42,407.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,577.31 : 168,766.61 = 42,407.55 : x
2. Step 2: Convert to fraction form
   112,577.31/168,766.61 = 42,407.55/x
3. Step 3: Cross multiply
   112,577.31x = 168,766.61 × 42,407.55
4. Step 4: Simplify right side
   112,577.31x = 7,156,978,239.87
5. Step 5: Solve for x
   x = 7,156,978,239.87/112,577.31
6. Step 6: Final answer
   x = 63,573.90