Finding the Fourth Proportional to 98,906.96, 148,384.72 and 28,786.88

Step by Step Solution

1. Step 1: Write the proportion equation
   98,906.96 : 148,384.72 = 28,786.88 : x
2. Step 2: Convert to fraction form
   98,906.96/148,384.72 = 28,786.88/x
3. Step 3: Cross multiply
   98,906.96x = 148,384.72 × 28,786.88
4. Step 4: Simplify right side
   98,906.96x = 4,271,533,128.47
5. Step 5: Solve for x
   x = 4,271,533,128.47/98,906.96
6. Step 6: Final answer
   x = 43,187.39