Finding the Fourth Proportional to 78,104.35, 107,784.07 and 42,294.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,104.35 : 107,784.07 = 42,294.40 : x
2. Step 2: Convert to fraction form
   78,104.35/107,784.07 = 42,294.40/x
3. Step 3: Cross multiply
   78,104.35x = 107,784.07 × 42,294.40
4. Step 4: Simplify right side
   78,104.35x = 4,558,662,801.30
5. Step 5: Solve for x
   x = 4,558,662,801.30/78,104.35
6. Step 6: Final answer
   x = 58,366.31