Finding the Fourth Proportional to 103,679.12, 143,120.52 and 70,164.56

Step by Step Solution

1. Step 1: Write the proportion equation
   103,679.12 : 143,120.52 = 70,164.56 : x
2. Step 2: Convert to fraction form
   103,679.12/143,120.52 = 70,164.56/x
3. Step 3: Cross multiply
   103,679.12x = 143,120.52 × 70,164.56
4. Step 4: Simplify right side
   103,679.12x = 10,041,988,312.77
5. Step 5: Solve for x
   x = 10,041,988,312.77/103,679.12
6. Step 6: Final answer
   x = 96,856.42