Finding the Fourth Proportional to 114,739.44, 158,323.20 and 64,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,739.44 : 158,323.20 = 64,428.72 : x
2. Step 2: Convert to fraction form
   114,739.44/158,323.20 = 64,428.72/x
3. Step 3: Cross multiply
   114,739.44x = 158,323.20 × 64,428.72
4. Step 4: Simplify right side
   114,739.44x = 10,200,561,122.30
5. Step 5: Solve for x
   x = 10,200,561,122.30/114,739.44
6. Step 6: Final answer
   x = 88,901.96