Finding the Fourth Proportional to 619,978.82, 929,102.10 and 335,055.11

Step by Step Solution

1. Step 1: Write the proportion equation
   619,978.82 : 929,102.10 = 335,055.11 : x
2. Step 2: Convert to fraction form
   619,978.82/929,102.10 = 335,055.11/x
3. Step 3: Cross multiply
   619,978.82x = 929,102.10 × 335,055.11
4. Step 4: Simplify right side
   619,978.82x = 311,300,406,316.73
5. Step 5: Solve for x
   x = 311,300,406,316.73/619,978.82
6. Step 6: Final answer
   x = 502,114.58