Finding the Fourth Proportional to 343,670.72, 474,264.59 and 190,731.98

Step by Step Solution

1. Step 1: Write the proportion equation
   343,670.72 : 474,264.59 = 190,731.98 : x
2. Step 2: Convert to fraction form
   343,670.72/474,264.59 = 190,731.98/x
3. Step 3: Cross multiply
   343,670.72x = 474,264.59 × 190,731.98
4. Step 4: Simplify right side
   343,670.72x = 90,457,424,526.59
5. Step 5: Solve for x
   x = 90,457,424,526.59/343,670.72
6. Step 6: Final answer
   x = 263,209.58