Finding the Fourth Proportional to 107,105.72, 147,772.10 and 61,777.62

Step by Step Solution

1. Step 1: Write the proportion equation
   107,105.72 : 147,772.10 = 61,777.62 : x
2. Step 2: Convert to fraction form
   107,105.72/147,772.10 = 61,777.62/x
3. Step 3: Cross multiply
   107,105.72x = 147,772.10 × 61,777.62
4. Step 4: Simplify right side
   107,105.72x = 9,129,008,331.51
5. Step 5: Solve for x
   x = 9,129,008,331.51/107,105.72
6. Step 6: Final answer
   x = 85,233.62