Finding the Fourth Proportional to 103,461.71, 142,651.91 and 80,498.21

Step by Step Solution

1. Step 1: Write the proportion equation
   103,461.71 : 142,651.91 = 80,498.21 : x
2. Step 2: Convert to fraction form
   103,461.71/142,651.91 = 80,498.21/x
3. Step 3: Cross multiply
   103,461.71x = 142,651.91 × 80,498.21
4. Step 4: Simplify right side
   103,461.71x = 11,483,222,292.33
5. Step 5: Solve for x
   x = 11,483,222,292.33/103,461.71
6. Step 6: Final answer
   x = 110,990.07