Finding the Fourth Proportional to 78,106.73, 107,787.35 and 42,296.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,106.73 : 107,787.35 = 42,296.78 : x
2. Step 2: Convert to fraction form
   78,106.73/107,787.35 = 42,296.78/x
3. Step 3: Cross multiply
   78,106.73x = 107,787.35 × 42,296.78
4. Step 4: Simplify right side
   78,106.73x = 4,559,057,618.25
5. Step 5: Solve for x
   x = 4,559,057,618.25/78,106.73
6. Step 6: Final answer
   x = 58,369.59