Finding the Fourth Proportional to 90,638.73, 135,977.55 and 38,017.89

Step by Step Solution

1. Step 1: Write the proportion equation
   90,638.73 : 135,977.55 = 38,017.89 : x
2. Step 2: Convert to fraction form
   90,638.73/135,977.55 = 38,017.89/x
3. Step 3: Cross multiply
   90,638.73x = 135,977.55 × 38,017.89
4. Step 4: Simplify right side
   90,638.73x = 5,169,579,538.37
5. Step 5: Solve for x
   x = 5,169,579,538.37/90,638.73
6. Step 6: Final answer
   x = 57,035.00