Finding the Fourth Proportional to 78,422.35, 108,223.31 and 42,612.36

Step by Step Solution

1. Step 1: Write the proportion equation
   78,422.35 : 108,223.31 = 42,612.36 : x
2. Step 2: Convert to fraction form
   78,422.35/108,223.31 = 42,612.36/x
3. Step 3: Cross multiply
   78,422.35x = 108,223.31 × 42,612.36
4. Step 4: Simplify right side
   78,422.35x = 4,611,650,646.11
5. Step 5: Solve for x
   x = 4,611,650,646.11/78,422.35
6. Step 6: Final answer
   x = 58,805.31