Finding the Fourth Proportional to 353,109.06, 487,300.05 and 191,975.15

Step by Step Solution

1. Step 1: Write the proportion equation
   353,109.06 : 487,300.05 = 191,975.15 : x
2. Step 2: Convert to fraction form
   353,109.06/487,300.05 = 191,975.15/x
3. Step 3: Cross multiply
   353,109.06x = 487,300.05 × 191,975.15
4. Step 4: Simplify right side
   353,109.06x = 93,549,501,412.01
5. Step 5: Solve for x
   x = 93,549,501,412.01/353,109.06
6. Step 6: Final answer
   x = 264,930.90