Finding the Fourth Proportional to 478,008.78, 659,648.52 and 263,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   478,008.78 : 659,648.52 = 263,152.50 : x
2. Step 2: Convert to fraction form
   478,008.78/659,648.52 = 263,152.50/x
3. Step 3: Cross multiply
   478,008.78x = 659,648.52 × 263,152.50
4. Step 4: Simplify right side
   478,008.78x = 173,588,157,159.30
5. Step 5: Solve for x
   x = 173,588,157,159.30/478,008.78
6. Step 6: Final answer
   x = 363,148.47