Finding the Fourth Proportional to 102,004.73, 140,763.71 and 56,681.54

Step by Step Solution

1. Step 1: Write the proportion equation
   102,004.73 : 140,763.71 = 56,681.54 : x
2. Step 2: Convert to fraction form
   102,004.73/140,763.71 = 56,681.54/x
3. Step 3: Cross multiply
   102,004.73x = 140,763.71 × 56,681.54
4. Step 4: Simplify right side
   102,004.73x = 7,978,703,858.91
5. Step 5: Solve for x
   x = 7,978,703,858.91/102,004.73
6. Step 6: Final answer
   x = 78,218.96