Finding the Fourth Proportional to 91,019.60, 125,570.22 and 55,196.54

Step by Step Solution

1. Step 1: Write the proportion equation
   91,019.60 : 125,570.22 = 55,196.54 : x
2. Step 2: Convert to fraction form
   91,019.60/125,570.22 = 55,196.54/x
3. Step 3: Cross multiply
   91,019.60x = 125,570.22 × 55,196.54
4. Step 4: Simplify right side
   91,019.60x = 6,931,041,671.04
5. Step 5: Solve for x
   x = 6,931,041,671.04/91,019.60
6. Step 6: Final answer
   x = 76,148.89