Finding the Fourth Proportional to 478,667.48, 660,552.06 and 260,877.97

Step by Step Solution

1. Step 1: Write the proportion equation
   478,667.48 : 660,552.06 = 260,877.97 : x
2. Step 2: Convert to fraction form
   478,667.48/660,552.06 = 260,877.97/x
3. Step 3: Cross multiply
   478,667.48x = 660,552.06 × 260,877.97
4. Step 4: Simplify right side
   478,667.48x = 172,323,478,580.50
5. Step 5: Solve for x
   x = 172,323,478,580.50/478,667.48
6. Step 6: Final answer
   x = 360,006.66