Finding the Fourth Proportional to 157,046.41, 216,729.72 and 89,991.37

Step by Step Solution

1. Step 1: Write the proportion equation
   157,046.41 : 216,729.72 = 89,991.37 : x
2. Step 2: Convert to fraction form
   157,046.41/216,729.72 = 89,991.37/x
3. Step 3: Cross multiply
   157,046.41x = 216,729.72 × 89,991.37
4. Step 4: Simplify right side
   157,046.41x = 19,503,804,422.52
5. Step 5: Solve for x
   x = 19,503,804,422.52/157,046.41
6. Step 6: Final answer
   x = 124,191.34