Finding the Fourth Proportional to 102,045.89, 140,825.01 and 56,107.47

Step by Step Solution

1. Step 1: Write the proportion equation
   102,045.89 : 140,825.01 = 56,107.47 : x
2. Step 2: Convert to fraction form
   102,045.89/140,825.01 = 56,107.47/x
3. Step 3: Cross multiply
   102,045.89x = 140,825.01 × 56,107.47
4. Step 4: Simplify right side
   102,045.89x = 7,901,334,883.56
5. Step 5: Solve for x
   x = 7,901,334,883.56/102,045.89
6. Step 6: Final answer
   x = 77,429.24