Finding the Fourth Proportional to 78,105.73, 107,785.89 and 42,295.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,105.73 : 107,785.89 = 42,295.74 : x
2. Step 2: Convert to fraction form
   78,105.73/107,785.89 = 42,295.74/x
3. Step 3: Cross multiply
   78,105.73x = 107,785.89 × 42,295.74
4. Step 4: Simplify right side
   78,105.73x = 4,558,883,979.11
5. Step 5: Solve for x
   x = 4,558,883,979.11/78,105.73
6. Step 6: Final answer
   x = 58,368.11