Finding the Fourth Proportional to 224,793.12, 309,892.71 and 138,694.59

Step by Step Solution

1. Step 1: Write the proportion equation
   224,793.12 : 309,892.71 = 138,694.59 : x
2. Step 2: Convert to fraction form
   224,793.12/309,892.71 = 138,694.59/x
3. Step 3: Cross multiply
   224,793.12x = 309,892.71 × 138,694.59
4. Step 4: Simplify right side
   224,793.12x = 42,980,442,357.44
5. Step 5: Solve for x
   x = 42,980,442,357.44/224,793.12
6. Step 6: Final answer
   x = 191,199.99