Finding the Fourth Proportional to 78,295.98, 108,049.23 and 42,486.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,295.98 : 108,049.23 = 42,486.30 : x
2. Step 2: Convert to fraction form
   78,295.98/108,049.23 = 42,486.30/x
3. Step 3: Cross multiply
   78,295.98x = 108,049.23 × 42,486.30
4. Step 4: Simplify right side
   78,295.98x = 4,590,612,000.55
5. Step 5: Solve for x
   x = 4,590,612,000.55/78,295.98
6. Step 6: Final answer
   x = 58,631.52