Finding the Fourth Proportional to 78,663.06, 108,553.77 and 42,853.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,663.06 : 108,553.77 = 42,853.50 : x
2. Step 2: Convert to fraction form
   78,663.06/108,553.77 = 42,853.50/x
3. Step 3: Cross multiply
   78,663.06x = 108,553.77 × 42,853.50
4. Step 4: Simplify right side
   78,663.06x = 4,651,908,982.70
5. Step 5: Solve for x
   x = 4,651,908,982.70/78,663.06
6. Step 6: Final answer
   x = 59,137.15