Finding the Fourth Proportional to 102,294.18, 141,109.40 and 85,152.96

Step by Step Solution

1. Step 1: Write the proportion equation
   102,294.18 : 141,109.40 = 85,152.96 : x
2. Step 2: Convert to fraction form
   102,294.18/141,109.40 = 85,152.96/x
3. Step 3: Cross multiply
   102,294.18x = 141,109.40 × 85,152.96
4. Step 4: Simplify right side
   102,294.18x = 12,015,882,668.06
5. Step 5: Solve for x
   x = 12,015,882,668.06/102,294.18
6. Step 6: Final answer
   x = 117,463.99