Finding the Fourth Proportional to 91,471.98, 137,030.43 and 67,412.59

Step by Step Solution

1. Step 1: Write the proportion equation
   91,471.98 : 137,030.43 = 67,412.59 : x
2. Step 2: Convert to fraction form
   91,471.98/137,030.43 = 67,412.59/x
3. Step 3: Cross multiply
   91,471.98x = 137,030.43 × 67,412.59
4. Step 4: Simplify right side
   91,471.98x = 9,237,576,105.33
5. Step 5: Solve for x
   x = 9,237,576,105.33/91,471.98
6. Step 6: Final answer
   x = 100,988.04