Finding the Fourth Proportional to 140,870.34, 194,410.21 and 77,208.08

Step by Step Solution

1. Step 1: Write the proportion equation
   140,870.34 : 194,410.21 = 77,208.08 : x
2. Step 2: Convert to fraction form
   140,870.34/194,410.21 = 77,208.08/x
3. Step 3: Cross multiply
   140,870.34x = 194,410.21 × 77,208.08
4. Step 4: Simplify right side
   140,870.34x = 15,010,039,046.50
5. Step 5: Solve for x
   x = 15,010,039,046.50/140,870.34
6. Step 6: Final answer
   x = 106,552.16