Finding the Fourth Proportional to 72,870.56, 101,019.96 and 68,879.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,870.56 : 101,019.96 = 68,879.30 : x
2. Step 2: Convert to fraction form
   72,870.56/101,019.96 = 68,879.30/x
3. Step 3: Cross multiply
   72,870.56x = 101,019.96 × 68,879.30
4. Step 4: Simplify right side
   72,870.56x = 6,958,184,130.83
5. Step 5: Solve for x
   x = 6,958,184,130.83/72,870.56
6. Step 6: Final answer
   x = 95,486.90