Finding the Fourth Proportional to 288,849.30, 433,101.15 and 148,881.30

Step by Step Solution

1. Step 1: Write the proportion equation
   288,849.30 : 433,101.15 = 148,881.30 : x
2. Step 2: Convert to fraction form
   288,849.30/433,101.15 = 148,881.30/x
3. Step 3: Cross multiply
   288,849.30x = 433,101.15 × 148,881.30
4. Step 4: Simplify right side
   288,849.30x = 64,480,662,243.50
5. Step 5: Solve for x
   x = 64,480,662,243.50/288,849.30
6. Step 6: Final answer
   x = 223,232.88