Finding the Fourth Proportional to 78,354.66, 108,131.31 and 42,546.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,354.66 : 108,131.31 = 42,546.18 : x
2. Step 2: Convert to fraction form
   78,354.66/108,131.31 = 42,546.18/x
3. Step 3: Cross multiply
   78,354.66x = 108,131.31 × 42,546.18
4. Step 4: Simplify right side
   78,354.66x = 4,600,574,178.90
5. Step 5: Solve for x
   x = 4,600,574,178.90/78,354.66
6. Step 6: Final answer
   x = 58,714.75