Finding the Fourth Proportional to 102,076.42, 140,870.14 and 56,759.06

Step by Step Solution

1. Step 1: Write the proportion equation
   102,076.42 : 140,870.14 = 56,759.06 : x
2. Step 2: Convert to fraction form
   102,076.42/140,870.14 = 56,759.06/x
3. Step 3: Cross multiply
   102,076.42x = 140,870.14 × 56,759.06
4. Step 4: Simplify right side
   102,076.42x = 7,995,656,728.47
5. Step 5: Solve for x
   x = 7,995,656,728.47/102,076.42
6. Step 6: Final answer
   x = 78,330.11