Finding the Fourth Proportional to 83,439.83, 125,145.89 and 30,121.58

Step by Step Solution

1. Step 1: Write the proportion equation
   83,439.83 : 125,145.89 = 30,121.58 : x
2. Step 2: Convert to fraction form
   83,439.83/125,145.89 = 30,121.58/x
3. Step 3: Cross multiply
   83,439.83x = 125,145.89 × 30,121.58
4. Step 4: Simplify right side
   83,439.83x = 3,769,592,325.47
5. Step 5: Solve for x
   x = 3,769,592,325.47/83,439.83
6. Step 6: Final answer
   x = 45,177.37