Finding the Fourth Proportional to 78,473.26, 108,288.69 and 42,663.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,473.26 : 108,288.69 = 42,663.10 : x
2. Step 2: Convert to fraction form
   78,473.26/108,288.69 = 42,663.10/x
3. Step 3: Cross multiply
   78,473.26x = 108,288.69 × 42,663.10
4. Step 4: Simplify right side
   78,473.26x = 4,619,931,210.34
5. Step 5: Solve for x
   x = 4,619,931,210.34/78,473.26
6. Step 6: Final answer
   x = 58,872.68