Finding the Fourth Proportional to 91,616.27, 137,444.12 and 28,435.19

Step by Step Solution

1. Step 1: Write the proportion equation
   91,616.27 : 137,444.12 = 28,435.19 : x
2. Step 2: Convert to fraction form
   91,616.27/137,444.12 = 28,435.19/x
3. Step 3: Cross multiply
   91,616.27x = 137,444.12 × 28,435.19
4. Step 4: Simplify right side
   91,616.27x = 3,908,249,666.58
5. Step 5: Solve for x
   x = 3,908,249,666.58/91,616.27
6. Step 6: Final answer
   x = 42,658.90