Finding the Fourth Proportional to 57,959.96, 86,827.12 and 42,734.78

Step by Step Solution

1. Step 1: Write the proportion equation
   57,959.96 : 86,827.12 = 42,734.78 : x
2. Step 2: Convert to fraction form
   57,959.96/86,827.12 = 42,734.78/x
3. Step 3: Cross multiply
   57,959.96x = 86,827.12 × 42,734.78
4. Step 4: Simplify right side
   57,959.96x = 3,710,537,871.23
5. Step 5: Solve for x
   x = 3,710,537,871.23/57,959.96
6. Step 6: Final answer
   x = 64,018.99