Finding the Fourth Proportional to 98,061.84, 147,062.52 and 51,289.20

Step by Step Solution

1. Step 1: Write the proportion equation
   98,061.84 : 147,062.52 = 51,289.20 : x
2. Step 2: Convert to fraction form
   98,061.84/147,062.52 = 51,289.20/x
3. Step 3: Cross multiply
   98,061.84x = 147,062.52 × 51,289.20
4. Step 4: Simplify right side
   98,061.84x = 7,542,719,000.78
5. Step 5: Solve for x
   x = 7,542,719,000.78/98,061.84
6. Step 6: Final answer
   x = 76,917.98