Finding the Fourth Proportional to 139,012.47, 191,837.03 and 75,350.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,012.47 : 191,837.03 = 75,350.25 : x
2. Step 2: Convert to fraction form
   139,012.47/191,837.03 = 75,350.25/x
3. Step 3: Cross multiply
   139,012.47x = 191,837.03 × 75,350.25
4. Step 4: Simplify right side
   139,012.47x = 14,454,967,793.01
5. Step 5: Solve for x
   x = 14,454,967,793.01/139,012.47
6. Step 6: Final answer
   x = 103,983.25