Finding the Fourth Proportional to 119,139.47, 164,449.37 and 76,698

Step by Step Solution

1. Step 1: Write the proportion equation
   119,139.47 : 164,449.37 = 76,698 : x
2. Step 2: Convert to fraction form
   119,139.47/164,449.37 = 76,698/x
3. Step 3: Cross multiply
   119,139.47x = 164,449.37 × 76,698
4. Step 4: Simplify right side
   119,139.47x = 12,612,937,972.01
5. Step 5: Solve for x
   x = 12,612,937,972.01/119,139.47
6. Step 6: Final answer
   x = 105,867.00