Finding the Fourth Proportional to 1,066,096.78, 1,599,422.13 and 318,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066,096.78 : 1,599,422.13 = 318,142.78 : x
2. Step 2: Convert to fraction form
   1,066,096.78/1,599,422.13 = 318,142.78/x
3. Step 3: Cross multiply
   1,066,096.78x = 1,599,422.13 × 318,142.78
4. Step 4: Simplify right side
   1,066,096.78x = 508,844,602,831.72
5. Step 5: Solve for x
   x = 508,844,602,831.72/1,066,096.78
6. Step 6: Final answer
   x = 477,296.82