Finding the Fourth Proportional to 288,667.91, 432,894.18 and 99,074.48

Step by Step Solution

1. Step 1: Write the proportion equation
   288,667.91 : 432,894.18 = 99,074.48 : x
2. Step 2: Convert to fraction form
   288,667.91/432,894.18 = 99,074.48/x
3. Step 3: Cross multiply
   288,667.91x = 432,894.18 × 99,074.48
4. Step 4: Simplify right side
   288,667.91x = 42,888,764,865.88
5. Step 5: Solve for x
   x = 42,888,764,865.88/288,667.91
6. Step 6: Final answer
   x = 148,574.76