Finding the Fourth Proportional to 102,065.91, 140,850.76 and 56,748.08

Step by Step Solution

1. Step 1: Write the proportion equation
   102,065.91 : 140,850.76 = 56,748.08 : x
2. Step 2: Convert to fraction form
   102,065.91/140,850.76 = 56,748.08/x
3. Step 3: Cross multiply
   102,065.91x = 140,850.76 × 56,748.08
4. Step 4: Simplify right side
   102,065.91x = 7,993,010,196.54
5. Step 5: Solve for x
   x = 7,993,010,196.54/102,065.91
6. Step 6: Final answer
   x = 78,312.24