Finding the Fourth Proportional to 102,973.02, 142,100.78 and 57,651.09

Step by Step Solution

1. Step 1: Write the proportion equation
   102,973.02 : 142,100.78 = 57,651.09 : x
2. Step 2: Convert to fraction form
   102,973.02/142,100.78 = 57,651.09/x
3. Step 3: Cross multiply
   102,973.02x = 142,100.78 × 57,651.09
4. Step 4: Simplify right side
   102,973.02x = 8,192,264,568.59
5. Step 5: Solve for x
   x = 8,192,264,568.59/102,973.02
6. Step 6: Final answer
   x = 79,557.39