Finding the Fourth Proportional to 99,468.42, 149,207.59 and 28,401.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99,468.42 : 149,207.59 = 28,401.60 : x
2. Step 2: Convert to fraction form
   99,468.42/149,207.59 = 28,401.60/x
3. Step 3: Cross multiply
   99,468.42x = 149,207.59 × 28,401.60
4. Step 4: Simplify right side
   99,468.42x = 4,237,734,217.14
5. Step 5: Solve for x
   x = 4,237,734,217.14/99,468.42
6. Step 6: Final answer
   x = 42,603.82