Finding the Fourth Proportional to 91,870.56, 137,728.08 and 36,436.32

Step by Step Solution

1. Step 1: Write the proportion equation
   91,870.56 : 137,728.08 = 36,436.32 : x
2. Step 2: Convert to fraction form
   91,870.56/137,728.08 = 36,436.32/x
3. Step 3: Cross multiply
   91,870.56x = 137,728.08 × 36,436.32
4. Step 4: Simplify right side
   91,870.56x = 5,018,304,395.87
5. Step 5: Solve for x
   x = 5,018,304,395.87/91,870.56
6. Step 6: Final answer
   x = 54,623.64