Finding the Fourth Proportional to 760,030.56, 1,139,625.12 and 311,066.88

Step by Step Solution

1. Step 1: Write the proportion equation
   760,030.56 : 1,139,625.12 = 311,066.88 : x
2. Step 2: Convert to fraction form
   760,030.56/1,139,625.12 = 311,066.88/x
3. Step 3: Cross multiply
   760,030.56x = 1,139,625.12 × 311,066.88
4. Step 4: Simplify right side
   760,030.56x = 354,499,630,448.03
5. Step 5: Solve for x
   x = 354,499,630,448.03/760,030.56
6. Step 6: Final answer
   x = 466,428.13