Finding the Fourth Proportional to 140,671.18, 194,128.95 and 77,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   140,671.18 : 194,128.95 = 77,007.61 : x
2. Step 2: Convert to fraction form
   140,671.18/194,128.95 = 77,007.61/x
3. Step 3: Cross multiply
   140,671.18x = 194,128.95 × 77,007.61
4. Step 4: Simplify right side
   140,671.18x = 14,949,406,471.31
5. Step 5: Solve for x
   x = 14,949,406,471.31/140,671.18
6. Step 6: Final answer
   x = 106,271.99