Finding the Fourth Proportional to 119,490.17, 164,890.76 and 65,774.07

Step by Step Solution

1. Step 1: Write the proportion equation
   119,490.17 : 164,890.76 = 65,774.07 : x
2. Step 2: Convert to fraction form
   119,490.17/164,890.76 = 65,774.07/x
3. Step 3: Cross multiply
   119,490.17x = 164,890.76 × 65,774.07
4. Step 4: Simplify right side
   119,490.17x = 10,845,536,061.72
5. Step 5: Solve for x
   x = 10,845,536,061.72/119,490.17
6. Step 6: Final answer
   x = 90,765.09