Finding the Fourth Proportional to 444,061.21, 612,810.93 and 250,478.15

Step by Step Solution

1. Step 1: Write the proportion equation
   444,061.21 : 612,810.93 = 250,478.15 : x
2. Step 2: Convert to fraction form
   444,061.21/612,810.93 = 250,478.15/x
3. Step 3: Cross multiply
   444,061.21x = 612,810.93 × 250,478.15
4. Step 4: Simplify right side
   444,061.21x = 153,495,748,046.18
5. Step 5: Solve for x
   x = 153,495,748,046.18/444,061.21
6. Step 6: Final answer
   x = 345,663.49