Finding the Fourth Proportional to 91,585.16, 137,397.47 and 28,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   91,585.16 : 137,397.47 = 28,404.01 : x
2. Step 2: Convert to fraction form
   91,585.16/137,397.47 = 28,404.01/x
3. Step 3: Cross multiply
   91,585.16x = 137,397.47 × 28,404.01
4. Step 4: Simplify right side
   91,585.16x = 3,902,639,111.85
5. Step 5: Solve for x
   x = 3,902,639,111.85/91,585.16
6. Step 6: Final answer
   x = 42,612.13