Finding the Fourth Proportional to 99,303.31, 148,964.15 and 28,227.43

Step by Step Solution

1. Step 1: Write the proportion equation
   99,303.31 : 148,964.15 = 28,227.43 : x
2. Step 2: Convert to fraction form
   99,303.31/148,964.15 = 28,227.43/x
3. Step 3: Cross multiply
   99,303.31x = 148,964.15 × 28,227.43
4. Step 4: Simplify right side
   99,303.31x = 4,204,875,116.63
5. Step 5: Solve for x
   x = 4,204,875,116.63/99,303.31
6. Step 6: Final answer
   x = 42,343.76