Finding the Fourth Proportional to 429,886.38, 593,308.56 and 309,426.42

Step by Step Solution

1. Step 1: Write the proportion equation
   429,886.38 : 593,308.56 = 309,426.42 : x
2. Step 2: Convert to fraction form
   429,886.38/593,308.56 = 309,426.42/x
3. Step 3: Cross multiply
   429,886.38x = 593,308.56 × 309,426.42
4. Step 4: Simplify right side
   429,886.38x = 183,585,343,676.16
5. Step 5: Solve for x
   x = 183,585,343,676.16/429,886.38
6. Step 6: Final answer
   x = 427,055.50