Finding the Fourth Proportional to 78,663.10, 108,554.54 and 42,853.13

Step by Step Solution

1. Step 1: Write the proportion equation
   78,663.10 : 108,554.54 = 42,853.13 : x
2. Step 2: Convert to fraction form
   78,663.10/108,554.54 = 42,853.13/x
3. Step 3: Cross multiply
   78,663.10x = 108,554.54 × 42,853.13
4. Step 4: Simplify right side
   78,663.10x = 4,651,901,814.71
5. Step 5: Solve for x
   x = 4,651,901,814.71/78,663.10
6. Step 6: Final answer
   x = 59,137.03