Finding the Fourth Proportional to 280,112.01, 386,554.46 and 152,788.38

Step by Step Solution

1. Step 1: Write the proportion equation
   280,112.01 : 386,554.46 = 152,788.38 : x
2. Step 2: Convert to fraction form
   280,112.01/386,554.46 = 152,788.38/x
3. Step 3: Cross multiply
   280,112.01x = 386,554.46 × 152,788.38
4. Step 4: Simplify right side
   280,112.01x = 59,061,028,961.23
5. Step 5: Solve for x
   x = 59,061,028,961.23/280,112.01
6. Step 6: Final answer
   x = 210,847.90