Finding the Fourth Proportional to 103,669.30, 142,932.78 and 67,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,669.30 : 142,932.78 = 67,802.50 : x
2. Step 2: Convert to fraction form
   103,669.30/142,932.78 = 67,802.50/x
3. Step 3: Cross multiply
   103,669.30x = 142,932.78 × 67,802.50
4. Step 4: Simplify right side
   103,669.30x = 9,691,199,815.95
5. Step 5: Solve for x
   x = 9,691,199,815.95/103,669.30
6. Step 6: Final answer
   x = 93,481.87