Finding the Fourth Proportional to 474,085.47, 711,128.89 and 193,602.72

Step by Step Solution

1. Step 1: Write the proportion equation
   474,085.47 : 711,128.89 = 193,602.72 : x
2. Step 2: Convert to fraction form
   474,085.47/711,128.89 = 193,602.72/x
3. Step 3: Cross multiply
   474,085.47x = 711,128.89 × 193,602.72
4. Step 4: Simplify right side
   474,085.47x = 137,676,485,880.66
5. Step 5: Solve for x
   x = 137,676,485,880.66/474,085.47
6. Step 6: Final answer
   x = 290,404.36