Finding the Fourth Proportional to 91,329, 126,038.82 and 55,513.20

Step by Step Solution

1. Step 1: Write the proportion equation
   91,329 : 126,038.82 = 55,513.20 : x
2. Step 2: Convert to fraction form
   91,329/126,038.82 = 55,513.20/x
3. Step 3: Cross multiply
   91,329x = 126,038.82 × 55,513.20
4. Step 4: Simplify right side
   91,329x = 6,996,818,222.42
5. Step 5: Solve for x
   x = 6,996,818,222.42/91,329
6. Step 6: Final answer
   x = 76,611.13