Finding the Fourth Proportional to 78,573.98, 108,430.02 and 42,763.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,573.98 : 108,430.02 = 42,763.22 : x
2. Step 2: Convert to fraction form
   78,573.98/108,430.02 = 42,763.22/x
3. Step 3: Cross multiply
   78,573.98x = 108,430.02 × 42,763.22
4. Step 4: Simplify right side
   78,573.98x = 4,636,816,799.86
5. Step 5: Solve for x
   x = 4,636,816,799.86/78,573.98
6. Step 6: Final answer
   x = 59,012.12