Finding the Fourth Proportional to 78,229.08, 107,955.54 and 42,418.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,229.08 : 107,955.54 = 42,418.98 : x
2. Step 2: Convert to fraction form
   78,229.08/107,955.54 = 42,418.98/x
3. Step 3: Cross multiply
   78,229.08x = 107,955.54 × 42,418.98
4. Step 4: Simplify right side
   78,229.08x = 4,579,363,892.15
5. Step 5: Solve for x
   x = 4,579,363,892.15/78,229.08
6. Step 6: Final answer
   x = 58,537.87