Finding the Fourth Proportional to 91,928.61, 137,824.56 and 38,636.24

Step by Step Solution

1. Step 1: Write the proportion equation
   91,928.61 : 137,824.56 = 38,636.24 : x
2. Step 2: Convert to fraction form
   91,928.61/137,824.56 = 38,636.24/x
3. Step 3: Cross multiply
   91,928.61x = 137,824.56 × 38,636.24
4. Step 4: Simplify right side
   91,928.61x = 5,325,022,088.93
5. Step 5: Solve for x
   x = 5,325,022,088.93/91,928.61
6. Step 6: Final answer
   x = 57,925.62