Finding the Fourth Proportional to 290,113.76, 400,385.76 and 194,818.88

Step by Step Solution

1. Step 1: Write the proportion equation
   290,113.76 : 400,385.76 = 194,818.88 : x
2. Step 2: Convert to fraction form
   290,113.76/400,385.76 = 194,818.88/x
3. Step 3: Cross multiply
   290,113.76x = 400,385.76 × 194,818.88
4. Step 4: Simplify right side
   290,113.76x = 78,002,705,331.15
5. Step 5: Solve for x
   x = 78,002,705,331.15/290,113.76
6. Step 6: Final answer
   x = 268,869.38