Finding the Fourth Proportional to 141,076.71, 194,689.89 and 77,418.72

Step by Step Solution

1. Step 1: Write the proportion equation
   141,076.71 : 194,689.89 = 77,418.72 : x
2. Step 2: Convert to fraction form
   141,076.71/194,689.89 = 77,418.72/x
3. Step 3: Cross multiply
   141,076.71x = 194,689.89 × 77,418.72
4. Step 4: Simplify right side
   141,076.71x = 15,072,642,080.74
5. Step 5: Solve for x
   x = 15,072,642,080.74/141,076.71
6. Step 6: Final answer
   x = 106,840.05