Finding the Fourth Proportional to 96,949.28, 145,419.69 and 30,387.89

Step by Step Solution

1. Step 1: Write the proportion equation
   96,949.28 : 145,419.69 = 30,387.89 : x
2. Step 2: Convert to fraction form
   96,949.28/145,419.69 = 30,387.89/x
3. Step 3: Cross multiply
   96,949.28x = 145,419.69 × 30,387.89
4. Step 4: Simplify right side
   96,949.28x = 4,418,997,543.55
5. Step 5: Solve for x
   x = 4,418,997,543.55/96,949.28
6. Step 6: Final answer
   x = 45,580.51