Finding the Fourth Proportional to 77,389.56, 116,136.12 and 28,141.56

Step by Step Solution

1. Step 1: Write the proportion equation
   77,389.56 : 116,136.12 = 28,141.56 : x
2. Step 2: Convert to fraction form
   77,389.56/116,136.12 = 28,141.56/x
3. Step 3: Cross multiply
   77,389.56x = 116,136.12 × 28,141.56
4. Step 4: Simplify right side
   77,389.56x = 3,268,251,589.15
5. Step 5: Solve for x
   x = 3,268,251,589.15/77,389.56
6. Step 6: Final answer
   x = 42,231.17