Finding the Fourth Proportional to 379,263.47, 523,398.71 and 218,118.42

Step by Step Solution

1. Step 1: Write the proportion equation
   379,263.47 : 523,398.71 = 218,118.42 : x
2. Step 2: Convert to fraction form
   379,263.47/523,398.71 = 218,118.42/x
3. Step 3: Cross multiply
   379,263.47x = 523,398.71 × 218,118.42
4. Step 4: Simplify right side
   379,263.47x = 114,162,900,200.53
5. Step 5: Solve for x
   x = 114,162,900,200.53/379,263.47
6. Step 6: Final answer
   x = 301,012.12