Finding the Fourth Proportional to 78,742.31, 108,664.28 and 42,932.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,742.31 : 108,664.28 = 42,932.31 : x
2. Step 2: Convert to fraction form
   78,742.31/108,664.28 = 42,932.31/x
3. Step 3: Cross multiply
   78,742.31x = 108,664.28 × 42,932.31
4. Step 4: Simplify right side
   78,742.31x = 4,665,208,093.73
5. Step 5: Solve for x
   x = 4,665,208,093.73/78,742.31
6. Step 6: Final answer
   x = 59,246.53