Finding the Fourth Proportional to 78,664.92, 108,557.73 and 42,854.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,664.92 : 108,557.73 = 42,854.82 : x
2. Step 2: Convert to fraction form
   78,664.92/108,557.73 = 42,854.82/x
3. Step 3: Cross multiply
   78,664.92x = 108,557.73 × 42,854.82
4. Step 4: Simplify right side
   78,664.92x = 4,652,221,978.76
5. Step 5: Solve for x
   x = 4,652,221,978.76/78,664.92
6. Step 6: Final answer
   x = 59,139.73