Finding the Fourth Proportional to 91,591.59, 137,334.42 and 28,394.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,591.59 : 137,334.42 = 28,394.94 : x
2. Step 2: Convert to fraction form
   91,591.59/137,334.42 = 28,394.94/x
3. Step 3: Cross multiply
   91,591.59x = 137,334.42 × 28,394.94
4. Step 4: Simplify right side
   91,591.59x = 3,899,602,615.83
5. Step 5: Solve for x
   x = 3,899,602,615.83/91,591.59
6. Step 6: Final answer
   x = 42,575.99