Finding the Fourth Proportional to 140,672.79, 194,128.47 and 77,010.59

Step by Step Solution

1. Step 1: Write the proportion equation
   140,672.79 : 194,128.47 = 77,010.59 : x
2. Step 2: Convert to fraction form
   140,672.79/194,128.47 = 77,010.59/x
3. Step 3: Cross multiply
   140,672.79x = 194,128.47 × 77,010.59
4. Step 4: Simplify right side
   140,672.79x = 14,949,948,088.58
5. Step 5: Solve for x
   x = 14,949,948,088.58/140,672.79
6. Step 6: Final answer
   x = 106,274.62