Finding the Fourth Proportional to 562,648.84, 776,457.52 and 308,023.72

Step by Step Solution

1. Step 1: Write the proportion equation
   562,648.84 : 776,457.52 = 308,023.72 : x
2. Step 2: Convert to fraction form
   562,648.84/776,457.52 = 308,023.72/x
3. Step 3: Cross multiply
   562,648.84x = 776,457.52 × 308,023.72
4. Step 4: Simplify right side
   562,648.84x = 239,167,333,732.37
5. Step 5: Solve for x
   x = 239,167,333,732.37/562,648.84
6. Step 6: Final answer
   x = 425,073.89