Finding the Fourth Proportional to 103,665.12, 143,101.20 and 70,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   103,665.12 : 143,101.20 = 70,150.56 : x
2. Step 2: Convert to fraction form
   103,665.12/143,101.20 = 70,150.56/x
3. Step 3: Cross multiply
   103,665.12x = 143,101.20 × 70,150.56
4. Step 4: Simplify right side
   103,665.12x = 10,038,629,316.67
5. Step 5: Solve for x
   x = 10,038,629,316.67/103,665.12
6. Step 6: Final answer
   x = 96,837.10