Finding the Fourth Proportional to 56,510,259.50, 84,778,025.25 and 20,608,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,510,259.50 : 84,778,025.25 = 20,608,467.50 : x
2. Step 2: Convert to fraction form
   56,510,259.50/84,778,025.25 = 20,608,467.50/x
3. Step 3: Cross multiply
   56,510,259.50x = 84,778,025.25 × 20,608,467.50
4. Step 4: Simplify right side
   56,510,259.50x = 1,747,145,178,078,804.50
5. Step 5: Solve for x
   x = 1,747,145,178,078,804.50/56,510,259.50
6. Step 6: Final answer
   x = 30,917,309.41