Finding the Fourth Proportional to 103,538.01, 142,529.85 and 76,629.81

Step by Step Solution

1. Step 1: Write the proportion equation
   103,538.01 : 142,529.85 = 76,629.81 : x
2. Step 2: Convert to fraction form
   103,538.01/142,529.85 = 76,629.81/x
3. Step 3: Cross multiply
   103,538.01x = 142,529.85 × 76,629.81
4. Step 4: Simplify right side
   103,538.01x = 10,922,035,324.83
5. Step 5: Solve for x
   x = 10,922,035,324.83/103,538.01
6. Step 6: Final answer
   x = 105,488.17