Finding the Fourth Proportional to 139,016.38, 191,842.74 and 75,354.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,016.38 : 191,842.74 = 75,354.16 : x
2. Step 2: Convert to fraction form
   139,016.38/191,842.74 = 75,354.16/x
3. Step 3: Cross multiply
   139,016.38x = 191,842.74 × 75,354.16
4. Step 4: Simplify right side
   139,016.38x = 14,456,148,524.80
5. Step 5: Solve for x
   x = 14,456,148,524.80/139,016.38
6. Step 6: Final answer
   x = 103,988.81