Finding the Fourth Proportional to 102,885.45, 141,973.82 and 57,559.88

Step by Step Solution

1. Step 1: Write the proportion equation
   102,885.45 : 141,973.82 = 57,559.88 : x
2. Step 2: Convert to fraction form
   102,885.45/141,973.82 = 57,559.88/x
3. Step 3: Cross multiply
   102,885.45x = 141,973.82 × 57,559.88
4. Step 4: Simplify right side
   102,885.45x = 8,171,995,476.37
5. Step 5: Solve for x
   x = 8,171,995,476.37/102,885.45
6. Step 6: Final answer
   x = 79,428.10