Finding the Fourth Proportional to 99,196.91, 148,802.97 and 28,118.36

Step by Step Solution

1. Step 1: Write the proportion equation
   99,196.91 : 148,802.97 = 28,118.36 : x
2. Step 2: Convert to fraction form
   99,196.91/148,802.97 = 28,118.36/x
3. Step 3: Cross multiply
   99,196.91x = 148,802.97 × 28,118.36
4. Step 4: Simplify right side
   99,196.91x = 4,184,094,594.92
5. Step 5: Solve for x
   x = 4,184,094,594.92/99,196.91
6. Step 6: Final answer
   x = 42,179.69