Finding the Fourth Proportional to 99,443.23, 149,142.06 and 28,364.51

Step by Step Solution

1. Step 1: Write the proportion equation
   99,443.23 : 149,142.06 = 28,364.51 : x
2. Step 2: Convert to fraction form
   99,443.23/149,142.06 = 28,364.51/x
3. Step 3: Cross multiply
   99,443.23x = 149,142.06 × 28,364.51
4. Step 4: Simplify right side
   99,443.23x = 4,230,341,825.15
5. Step 5: Solve for x
   x = 4,230,341,825.15/99,443.23
6. Step 6: Final answer
   x = 42,540.27