Finding the Fourth Proportional to 102,959.38, 142,100.97 and 70,667.47

Step by Step Solution

1. Step 1: Write the proportion equation
   102,959.38 : 142,100.97 = 70,667.47 : x
2. Step 2: Convert to fraction form
   102,959.38/142,100.97 = 70,667.47/x
3. Step 3: Cross multiply
   102,959.38x = 142,100.97 × 70,667.47
4. Step 4: Simplify right side
   102,959.38x = 10,041,916,034.45
5. Step 5: Solve for x
   x = 10,041,916,034.45/102,959.38
6. Step 6: Final answer
   x = 97,532.79