Finding the Fourth Proportional to 78,684.47, 118,045.15 and 31,302.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,684.47 : 118,045.15 = 31,302.25 : x
2. Step 2: Convert to fraction form
   78,684.47/118,045.15 = 31,302.25/x
3. Step 3: Cross multiply
   78,684.47x = 118,045.15 × 31,302.25
4. Step 4: Simplify right side
   78,684.47x = 3,695,078,796.59
5. Step 5: Solve for x
   x = 3,695,078,796.59/78,684.47
6. Step 6: Final answer
   x = 46,960.71