Finding the Fourth Proportional to 290,076.34, 400,300.76 and 161,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   290,076.34 : 400,300.76 = 161,014.72 : x
2. Step 2: Convert to fraction form
   290,076.34/400,300.76 = 161,014.72/x
3. Step 3: Cross multiply
   290,076.34x = 400,300.76 × 161,014.72
4. Step 4: Simplify right side
   290,076.34x = 64,454,314,787.19
5. Step 5: Solve for x
   x = 64,454,314,787.19/290,076.34
6. Step 6: Final answer
   x = 222,197.77