Finding the Fourth Proportional to 478,131.42, 659,835.88 and 263,279.18

Step by Step Solution

1. Step 1: Write the proportion equation
   478,131.42 : 659,835.88 = 263,279.18 : x
2. Step 2: Convert to fraction form
   478,131.42/659,835.88 = 263,279.18/x
3. Step 3: Cross multiply
   478,131.42x = 659,835.88 × 263,279.18
4. Step 4: Simplify right side
   478,131.42x = 173,721,049,420.98
5. Step 5: Solve for x
   x = 173,721,049,420.98/478,131.42
6. Step 6: Final answer
   x = 363,333.26