Finding the Fourth Proportional to 101,612, 140,222.67 and 56,288.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101,612 : 140,222.67 = 56,288.98 : x
2. Step 2: Convert to fraction form
   101,612/140,222.67 = 56,288.98/x
3. Step 3: Cross multiply
   101,612x = 140,222.67 × 56,288.98
4. Step 4: Simplify right side
   101,612x = 7,892,991,067.18
5. Step 5: Solve for x
   x = 7,892,991,067.18/101,612
6. Step 6: Final answer
   x = 77,677.75