Finding the Fourth Proportional to 443,385.36, 611,888.80 and 249,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   443,385.36 : 611,888.80 = 249,870.10 : x
2. Step 2: Convert to fraction form
   443,385.36/611,888.80 = 249,870.10/x
3. Step 3: Cross multiply
   443,385.36x = 611,888.80 × 249,870.10
4. Step 4: Simplify right side
   443,385.36x = 152,892,715,644.88
5. Step 5: Solve for x
   x = 152,892,715,644.88/443,385.36
6. Step 6: Final answer
   x = 344,830.32