Finding the Fourth Proportional to 562,399.42, 776,111.25 and 307,750.63

Step by Step Solution

1. Step 1: Write the proportion equation
   562,399.42 : 776,111.25 = 307,750.63 : x
2. Step 2: Convert to fraction form
   562,399.42/776,111.25 = 307,750.63/x
3. Step 3: Cross multiply
   562,399.42x = 776,111.25 × 307,750.63
4. Step 4: Simplify right side
   562,399.42x = 238,848,726,137.59
5. Step 5: Solve for x
   x = 238,848,726,137.59/562,399.42
6. Step 6: Final answer
   x = 424,695.90