Finding the Fourth Proportional to 102,679.31, 141,697.45 and 57,967.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,679.31 : 141,697.45 = 57,967.31 : x
2. Step 2: Convert to fraction form
   102,679.31/141,697.45 = 57,967.31/x
3. Step 3: Cross multiply
   102,679.31x = 141,697.45 × 57,967.31
4. Step 4: Simplify right side
   102,679.31x = 8,213,820,437.06
5. Step 5: Solve for x
   x = 8,213,820,437.06/102,679.31
6. Step 6: Final answer
   x = 79,994.89