Finding the Fourth Proportional to 198,648.72, 297,978.48 and 58,411.80

Step by Step Solution

1. Step 1: Write the proportion equation
   198,648.72 : 297,978.48 = 58,411.80 : x
2. Step 2: Convert to fraction form
   198,648.72/297,978.48 = 58,411.80/x
3. Step 3: Cross multiply
   198,648.72x = 297,978.48 × 58,411.80
4. Step 4: Simplify right side
   198,648.72x = 17,405,459,378.06
5. Step 5: Solve for x
   x = 17,405,459,378.06/198,648.72
6. Step 6: Final answer
   x = 87,619.29