Finding the Fourth Proportional to 140,668.71, 194,123.15 and 77,010.60

Step by Step Solution

1. Step 1: Write the proportion equation
   140,668.71 : 194,123.15 = 77,010.60 : x
2. Step 2: Convert to fraction form
   140,668.71/194,123.15 = 77,010.60/x
3. Step 3: Cross multiply
   140,668.71x = 194,123.15 × 77,010.60
4. Step 4: Simplify right side
   140,668.71x = 14,949,539,870.34
5. Step 5: Solve for x
   x = 14,949,539,870.34/140,668.71
6. Step 6: Final answer
   x = 106,274.81