Finding the Fourth Proportional to 103,421.89, 142,776.71 and 69,608.17

Step by Step Solution

1. Step 1: Write the proportion equation
   103,421.89 : 142,776.71 = 69,608.17 : x
2. Step 2: Convert to fraction form
   103,421.89/142,776.71 = 69,608.17/x
3. Step 3: Cross multiply
   103,421.89x = 142,776.71 × 69,608.17
4. Step 4: Simplify right side
   103,421.89x = 9,938,425,501.72
5. Step 5: Solve for x
   x = 9,938,425,501.72/103,421.89
6. Step 6: Final answer
   x = 96,095.96