Finding the Fourth Proportional to 78,296.98, 108,050.61 and 42,487.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,296.98 : 108,050.61 = 42,487.30 : x
2. Step 2: Convert to fraction form
   78,296.98/108,050.61 = 42,487.30/x
3. Step 3: Cross multiply
   78,296.98x = 108,050.61 × 42,487.30
4. Step 4: Simplify right side
   78,296.98x = 4,590,778,682.25
5. Step 5: Solve for x
   x = 4,590,778,682.25/78,296.98
6. Step 6: Final answer
   x = 58,632.90