Finding the Fourth Proportional to 454,151.78, 681,499.83 and 187,915.94

Step by Step Solution

1. Step 1: Write the proportion equation
   454,151.78 : 681,499.83 = 187,915.94 : x
2. Step 2: Convert to fraction form
   454,151.78/681,499.83 = 187,915.94/x
3. Step 3: Cross multiply
   454,151.78x = 681,499.83 × 187,915.94
4. Step 4: Simplify right side
   454,151.78x = 128,064,681,164.29
5. Step 5: Solve for x
   x = 128,064,681,164.29/454,151.78
6. Step 6: Final answer
   x = 281,986.52