Finding the Fourth Proportional to 78,742.16, 108,664.70 and 42,932.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,742.16 : 108,664.70 = 42,932.77 : x
2. Step 2: Convert to fraction form
   78,742.16/108,664.70 = 42,932.77/x
3. Step 3: Cross multiply
   78,742.16x = 108,664.70 × 42,932.77
4. Step 4: Simplify right side
   78,742.16x = 4,665,276,572.22
5. Step 5: Solve for x
   x = 4,665,276,572.22/78,742.16
6. Step 6: Final answer
   x = 59,247.51