Finding the Fourth Proportional to 70,142.16, 96,592.31 and 60,939.47

Step by Step Solution

1. Step 1: Write the proportion equation
   70,142.16 : 96,592.31 = 60,939.47 : x
2. Step 2: Convert to fraction form
   70,142.16/96,592.31 = 60,939.47/x
3. Step 3: Cross multiply
   70,142.16x = 96,592.31 × 60,939.47
4. Step 4: Simplify right side
   70,142.16x = 5,886,283,389.82
5. Step 5: Solve for x
   x = 5,886,283,389.82/70,142.16
6. Step 6: Final answer
   x = 83,919.33