Finding the Fourth Proportional to 171,841.89, 257,686.71 and 91,860.48

Step by Step Solution

1. Step 1: Write the proportion equation
   171,841.89 : 257,686.71 = 91,860.48 : x
2. Step 2: Convert to fraction form
   171,841.89/257,686.71 = 91,860.48/x
3. Step 3: Cross multiply
   171,841.89x = 257,686.71 × 91,860.48
4. Step 4: Simplify right side
   171,841.89x = 23,671,223,122.48
5. Step 5: Solve for x
   x = 23,671,223,122.48/171,841.89
6. Step 6: Final answer
   x = 137,750.02