Finding the Fourth Proportional to 119,408.42, 164,784.71 and 64,961.80

Step by Step Solution

1. Step 1: Write the proportion equation
   119,408.42 : 164,784.71 = 64,961.80 : x
2. Step 2: Convert to fraction form
   119,408.42/164,784.71 = 64,961.80/x
3. Step 3: Cross multiply
   119,408.42x = 164,784.71 × 64,961.80
4. Step 4: Simplify right side
   119,408.42x = 10,704,711,124.52
5. Step 5: Solve for x
   x = 10,704,711,124.52/119,408.42
6. Step 6: Final answer
   x = 89,647.87