Finding the Fourth Proportional to 91,567.56, 137,387.52 and 28,392.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,567.56 : 137,387.52 = 28,392.69 : x
2. Step 2: Convert to fraction form
   91,567.56/137,387.52 = 28,392.69/x
3. Step 3: Cross multiply
   91,567.56x = 137,387.52 × 28,392.69
4. Step 4: Simplify right side
   91,567.56x = 3,900,801,265.23
5. Step 5: Solve for x
   x = 3,900,801,265.23/91,567.56
6. Step 6: Final answer
   x = 42,600.25