Finding the Fourth Proportional to 70,686.57, 97,456.51 and 57,892.62

Step by Step Solution

1. Step 1: Write the proportion equation
   70,686.57 : 97,456.51 = 57,892.62 : x
2. Step 2: Convert to fraction form
   70,686.57/97,456.51 = 57,892.62/x
3. Step 3: Cross multiply
   70,686.57x = 97,456.51 × 57,892.62
4. Step 4: Simplify right side
   70,686.57x = 5,642,012,699.96
5. Step 5: Solve for x
   x = 5,642,012,699.96/70,686.57
6. Step 6: Final answer
   x = 79,817.32