Finding the Fourth Proportional to 56,964,843.78, 78,611,169.47 and 30,859,871.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,964,843.78 : 78,611,169.47 = 30,859,871.37 : x
2. Step 2: Convert to fraction form
   56,964,843.78/78,611,169.47 = 30,859,871.37/x
3. Step 3: Cross multiply
   56,964,843.78x = 78,611,169.47 × 30,859,871.37
4. Step 4: Simplify right side
   56,964,843.78x = 2,425,930,577,640,380
5. Step 5: Solve for x
   x = 2,425,930,577,640,380/56,964,843.78
6. Step 6: Final answer
   x = 42,586,451.87