Finding the Fourth Proportional to 91,061.76, 136,593.60 and 38,464.32

Step by Step Solution

1. Step 1: Write the proportion equation
   91,061.76 : 136,593.60 = 38,464.32 : x
2. Step 2: Convert to fraction form
   91,061.76/136,593.60 = 38,464.32/x
3. Step 3: Cross multiply
   91,061.76x = 136,593.60 × 38,464.32
4. Step 4: Simplify right side
   91,061.76x = 5,253,979,940.35
5. Step 5: Solve for x
   x = 5,253,979,940.35/91,061.76
6. Step 6: Final answer
   x = 57,696.89