Finding the Fourth Proportional to 91,592.56, 137,408.52 and 28,411.36

Step by Step Solution

1. Step 1: Write the proportion equation
   91,592.56 : 137,408.52 = 28,411.36 : x
2. Step 2: Convert to fraction form
   91,592.56/137,408.52 = 28,411.36/x
3. Step 3: Cross multiply
   91,592.56x = 137,408.52 × 28,411.36
4. Step 4: Simplify right side
   91,592.56x = 3,903,962,928.79
5. Step 5: Solve for x
   x = 3,903,962,928.79/91,592.56
6. Step 6: Final answer
   x = 42,623.14