Finding the Fourth Proportional to 94,694.60, 142,061.33 and 28,128.80

Step by Step Solution

1. Step 1: Write the proportion equation
   94,694.60 : 142,061.33 = 28,128.80 : x
2. Step 2: Convert to fraction form
   94,694.60/142,061.33 = 28,128.80/x
3. Step 3: Cross multiply
   94,694.60x = 142,061.33 × 28,128.80
4. Step 4: Simplify right side
   94,694.60x = 3,996,013,888.35
5. Step 5: Solve for x
   x = 3,996,013,888.35/94,694.60
6. Step 6: Final answer
   x = 42,198.96