Finding the Fourth Proportional to 83,642.46, 115,398.24 and 47,807.10

Step by Step Solution

1. Step 1: Write the proportion equation
   83,642.46 : 115,398.24 = 47,807.10 : x
2. Step 2: Convert to fraction form
   83,642.46/115,398.24 = 47,807.10/x
3. Step 3: Cross multiply
   83,642.46x = 115,398.24 × 47,807.10
4. Step 4: Simplify right side
   83,642.46x = 5,516,855,199.50
5. Step 5: Solve for x
   x = 5,516,855,199.50/83,642.46
6. Step 6: Final answer
   x = 65,957.59