Finding the Fourth Proportional to 267,142.72, 400,621.82 and 77,551.68

Step by Step Solution

1. Step 1: Write the proportion equation
   267,142.72 : 400,621.82 = 77,551.68 : x
2. Step 2: Convert to fraction form
   267,142.72/400,621.82 = 77,551.68/x
3. Step 3: Cross multiply
   267,142.72x = 400,621.82 × 77,551.68
4. Step 4: Simplify right side
   267,142.72x = 31,068,895,185.66
5. Step 5: Solve for x
   x = 31,068,895,185.66/267,142.72
6. Step 6: Final answer
   x = 116,300.74