Finding the Fourth Proportional to 107,106.15, 147,772.71 and 61,778.05

Step by Step Solution

1. Step 1: Write the proportion equation
   107,106.15 : 147,772.71 = 61,778.05 : x
2. Step 2: Convert to fraction form
   107,106.15/147,772.71 = 61,778.05/x
3. Step 3: Cross multiply
   107,106.15x = 147,772.71 × 61,778.05
4. Step 4: Simplify right side
   107,106.15x = 9,129,109,867.02
5. Step 5: Solve for x
   x = 9,129,109,867.02/107,106.15
6. Step 6: Final answer
   x = 85,234.23