Finding the Fourth Proportional to 102,992.74, 142,052.61 and 69,039.52

Step by Step Solution

1. Step 1: Write the proportion equation
   102,992.74 : 142,052.61 = 69,039.52 : x
2. Step 2: Convert to fraction form
   102,992.74/142,052.61 = 69,039.52/x
3. Step 3: Cross multiply
   102,992.74x = 142,052.61 × 69,039.52
4. Step 4: Simplify right side
   102,992.74x = 9,807,244,009.15
5. Step 5: Solve for x
   x = 9,807,244,009.15/102,992.74
6. Step 6: Final answer
   x = 95,222.67