Finding the Fourth Proportional to 345,978.48, 477,448.92 and 187,002.48

Step by Step Solution

1. Step 1: Write the proportion equation
   345,978.48 : 477,448.92 = 187,002.48 : x
2. Step 2: Convert to fraction form
   345,978.48/477,448.92 = 187,002.48/x
3. Step 3: Cross multiply
   345,978.48x = 477,448.92 × 187,002.48
4. Step 4: Simplify right side
   345,978.48x = 89,284,132,113.32
5. Step 5: Solve for x
   x = 89,284,132,113.32/345,978.48
6. Step 6: Final answer
   x = 258,062.68