Finding the Fourth Proportional to 103,014.86, 142,169.54 and 57,692.12

Step by Step Solution

1. Step 1: Write the proportion equation
   103,014.86 : 142,169.54 = 57,692.12 : x
2. Step 2: Convert to fraction form
   103,014.86/142,169.54 = 57,692.12/x
3. Step 3: Cross multiply
   103,014.86x = 142,169.54 × 57,692.12
4. Step 4: Simplify right side
   103,014.86x = 8,202,061,162.72
5. Step 5: Solve for x
   x = 8,202,061,162.72/103,014.86
6. Step 6: Final answer
   x = 79,620.18