Finding the Fourth Proportional to 78,111.78, 107,794.35 and 42,301.85

Step by Step Solution

1. Step 1: Write the proportion equation
   78,111.78 : 107,794.35 = 42,301.85 : x
2. Step 2: Convert to fraction form
   78,111.78/107,794.35 = 42,301.85/x
3. Step 3: Cross multiply
   78,111.78x = 107,794.35 × 42,301.85
4. Step 4: Simplify right side
   78,111.78x = 4,559,899,885.58
5. Step 5: Solve for x
   x = 4,559,899,885.58/78,111.78
6. Step 6: Final answer
   x = 58,376.60