Finding the Fourth Proportional to 119,320.30, 164,658.85 and 64,870.75

Step by Step Solution

1. Step 1: Write the proportion equation
   119,320.30 : 164,658.85 = 64,870.75 : x
2. Step 2: Convert to fraction form
   119,320.30/164,658.85 = 64,870.75/x
3. Step 3: Cross multiply
   119,320.30x = 164,658.85 × 64,870.75
4. Step 4: Simplify right side
   119,320.30x = 10,681,543,093.64
5. Step 5: Solve for x
   x = 10,681,543,093.64/119,320.30
6. Step 6: Final answer
   x = 89,519.91