Finding the Fourth Proportional to 307.77, 461.72 and 91.33

Step by Step Solution

1. Step 1: Write the proportion equation
   307.77 : 461.72 = 91.33 : x
2. Step 2: Convert to fraction form
   307.77/461.72 = 91.33/x
3. Step 3: Cross multiply
   307.77x = 461.72 × 91.33
4. Step 4: Simplify right side
   307.77x = 42,168.89
5. Step 5: Solve for x
   x = 42,168.89/307.77
6. Step 6: Final answer
   x = 137.01