Finding the Fourth Proportional to 103,037.27, 142,120.43 and 72,475.18

Step by Step Solution

1. Step 1: Write the proportion equation
   103,037.27 : 142,120.43 = 72,475.18 : x
2. Step 2: Convert to fraction form
   103,037.27/142,120.43 = 72,475.18/x
3. Step 3: Cross multiply
   103,037.27x = 142,120.43 × 72,475.18
4. Step 4: Simplify right side
   103,037.27x = 10,300,203,903.58
5. Step 5: Solve for x
   x = 10,300,203,903.58/103,037.27
6. Step 6: Final answer
   x = 99,965.81