Finding the Fourth Proportional to 78,117.12, 107,801.46 and 42,307.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,117.12 : 107,801.46 = 42,307.02 : x
2. Step 2: Convert to fraction form
   78,117.12/107,801.46 = 42,307.02/x
3. Step 3: Cross multiply
   78,117.12x = 107,801.46 × 42,307.02
4. Step 4: Simplify right side
   78,117.12x = 4,560,758,524.25
5. Step 5: Solve for x
   x = 4,560,758,524.25/78,117.12
6. Step 6: Final answer
   x = 58,383.60