Finding the Fourth Proportional to 113,428.83, 156,540.83 and 65,683.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,428.83 : 156,540.83 = 65,683.02 : x
2. Step 2: Convert to fraction form
   113,428.83/156,540.83 = 65,683.02/x
3. Step 3: Cross multiply
   113,428.83x = 156,540.83 × 65,683.02
4. Step 4: Simplify right side
   113,428.83x = 10,282,074,139.29
5. Step 5: Solve for x
   x = 10,282,074,139.29/113,428.83
6. Step 6: Final answer
   x = 90,647.80