Finding the Fourth Proportional to 451,611.72, 623,196.18 and 250,407.72

Step by Step Solution

1. Step 1: Write the proportion equation
   451,611.72 : 623,196.18 = 250,407.72 : x
2. Step 2: Convert to fraction form
   451,611.72/623,196.18 = 250,407.72/x
3. Step 3: Cross multiply
   451,611.72x = 623,196.18 × 250,407.72
4. Step 4: Simplify right side
   451,611.72x = 156,053,134,546.51
5. Step 5: Solve for x
   x = 156,053,134,546.51/451,611.72
6. Step 6: Final answer
   x = 345,547.13