Finding the Fourth Proportional to 78,103.76, 107,783.12 and 42,293.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,103.76 : 107,783.12 = 42,293.76 : x
2. Step 2: Convert to fraction form
   78,103.76/107,783.12 = 42,293.76/x
3. Step 3: Cross multiply
   78,103.76x = 107,783.12 × 42,293.76
4. Step 4: Simplify right side
   78,103.76x = 4,558,553,409.33
5. Step 5: Solve for x
   x = 4,558,553,409.33/78,103.76
6. Step 6: Final answer
   x = 58,365.35