Finding the Fourth Proportional to 78,117.95, 107,802.74 and 42,307.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,117.95 : 107,802.74 = 42,307.97 : x
2. Step 2: Convert to fraction form
   78,117.95/107,802.74 = 42,307.97/x
3. Step 3: Cross multiply
   78,117.95x = 107,802.74 × 42,307.97
4. Step 4: Simplify right side
   78,117.95x = 4,560,914,656.59
5. Step 5: Solve for x
   x = 4,560,914,656.59/78,117.95
6. Step 6: Final answer
   x = 58,384.97