Finding the Fourth Proportional to 78,766.23, 118,156.70 and 31,369.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,766.23 : 118,156.70 = 31,369.89 : x
2. Step 2: Convert to fraction form
   78,766.23/118,156.70 = 31,369.89/x
3. Step 3: Cross multiply
   78,766.23x = 118,156.70 × 31,369.89
4. Step 4: Simplify right side
   78,766.23x = 3,706,562,681.76
5. Step 5: Solve for x
   x = 3,706,562,681.76/78,766.23
6. Step 6: Final answer
   x = 47,057.76