Finding the Fourth Proportional to 478,301.89, 660,086.55 and 263,441.86

Step by Step Solution

1. Step 1: Write the proportion equation
   478,301.89 : 660,086.55 = 263,441.86 : x
2. Step 2: Convert to fraction form
   478,301.89/660,086.55 = 263,441.86/x
3. Step 3: Cross multiply
   478,301.89x = 660,086.55 × 263,441.86
4. Step 4: Simplify right side
   478,301.89x = 173,894,428,492.98
5. Step 5: Solve for x
   x = 173,894,428,492.98/478,301.89
6. Step 6: Final answer
   x = 363,566.26