Finding the Fourth Proportional to 116,020.89, 174,031.49 and 31,781.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,020.89 : 174,031.49 = 31,781.80 : x
2. Step 2: Convert to fraction form
   116,020.89/174,031.49 = 31,781.80/x
3. Step 3: Cross multiply
   116,020.89x = 174,031.49 × 31,781.80
4. Step 4: Simplify right side
   116,020.89x = 5,531,032,979.82
5. Step 5: Solve for x
   x = 5,531,032,979.82/116,020.89
6. Step 6: Final answer
   x = 47,672.73