Finding the Fourth Proportional to 99,727.57, 149,590.17 and 28,651.96

Step by Step Solution

1. Step 1: Write the proportion equation
   99,727.57 : 149,590.17 = 28,651.96 : x
2. Step 2: Convert to fraction form
   99,727.57/149,590.17 = 28,651.96/x
3. Step 3: Cross multiply
   99,727.57x = 149,590.17 × 28,651.96
4. Step 4: Simplify right side
   99,727.57x = 4,286,051,567.23
5. Step 5: Solve for x
   x = 4,286,051,567.23/99,727.57
6. Step 6: Final answer
   x = 42,977.60