Finding the Fourth Proportional to 103,697.02, 143,062.78 and 60,662.80

Step by Step Solution

1. Step 1: Write the proportion equation
   103,697.02 : 143,062.78 = 60,662.80 : x
2. Step 2: Convert to fraction form
   103,697.02/143,062.78 = 60,662.80/x
3. Step 3: Cross multiply
   103,697.02x = 143,062.78 × 60,662.80
4. Step 4: Simplify right side
   103,697.02x = 8,678,588,810.58
5. Step 5: Solve for x
   x = 8,678,588,810.58/103,697.02
6. Step 6: Final answer
   x = 83,691.79