Finding the Fourth Proportional to 91,255.38, 136,692.38 and 73,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   91,255.38 : 136,692.38 = 73,389.42 : x
2. Step 2: Convert to fraction form
   91,255.38/136,692.38 = 73,389.42/x
3. Step 3: Cross multiply
   91,255.38x = 136,692.38 × 73,389.42
4. Step 4: Simplify right side
   91,255.38x = 10,031,774,119.67
5. Step 5: Solve for x
   x = 10,031,774,119.67/91,255.38
6. Step 6: Final answer
   x = 109,930.77