Finding the Fourth Proportional to 102,017.02, 140,774.52 and 56,692.15

Step by Step Solution

1. Step 1: Write the proportion equation
   102,017.02 : 140,774.52 = 56,692.15 : x
2. Step 2: Convert to fraction form
   102,017.02/140,774.52 = 56,692.15/x
3. Step 3: Cross multiply
   102,017.02x = 140,774.52 × 56,692.15
4. Step 4: Simplify right side
   102,017.02x = 7,980,810,204.02
5. Step 5: Solve for x
   x = 7,980,810,204.02/102,017.02
6. Step 6: Final answer
   x = 78,230.18