Finding the Fourth Proportional to 52,145,132.72, 78,220,688.18 and 13,805,650.58

Step by Step Solution

1. Step 1: Write the proportion equation
   52,145,132.72 : 78,220,688.18 = 13,805,650.58 : x
2. Step 2: Convert to fraction form
   52,145,132.72/78,220,688.18 = 13,805,650.58/x
3. Step 3: Cross multiply
   52,145,132.72x = 78,220,688.18 × 13,805,650.58
4. Step 4: Simplify right side
   52,145,132.72x = 1,079,887,489,140,216.25
5. Step 5: Solve for x
   x = 1,079,887,489,140,216.25/52,145,132.72
6. Step 6: Final answer
   x = 20,709,267.25