Finding the Fourth Proportional to 107,105.78, 147,803.46 and 61,783.86

Step by Step Solution

1. Step 1: Write the proportion equation
   107,105.78 : 147,803.46 = 61,783.86 : x
2. Step 2: Convert to fraction form
   107,105.78/147,803.46 = 61,783.86/x
3. Step 3: Cross multiply
   107,105.78x = 147,803.46 × 61,783.86
4. Step 4: Simplify right side
   107,105.78x = 9,131,868,280.16
5. Step 5: Solve for x
   x = 9,131,868,280.16/107,105.78
6. Step 6: Final answer
   x = 85,260.28