Finding the Fourth Proportional to 493,445.50, 740,019.25 and 256,659.01

Step by Step Solution

1. Step 1: Write the proportion equation
   493,445.50 : 740,019.25 = 256,659.01 : x
2. Step 2: Convert to fraction form
   493,445.50/740,019.25 = 256,659.01/x
3. Step 3: Cross multiply
   493,445.50x = 740,019.25 × 256,659.01
4. Step 4: Simplify right side
   493,445.50x = 189,932,608,085.94
5. Step 5: Solve for x
   x = 189,932,608,085.94/493,445.50
6. Step 6: Final answer
   x = 384,911.01