Finding the Fourth Proportional to 140,715.30, 194,179.89 and 77,040.79

Step by Step Solution

1. Step 1: Write the proportion equation
   140,715.30 : 194,179.89 = 77,040.79 : x
2. Step 2: Convert to fraction form
   140,715.30/194,179.89 = 77,040.79/x
3. Step 3: Cross multiply
   140,715.30x = 194,179.89 × 77,040.79
4. Step 4: Simplify right side
   140,715.30x = 14,959,772,127.71
5. Step 5: Solve for x
   x = 14,959,772,127.71/140,715.30
6. Step 6: Final answer
   x = 106,312.34