Finding the Fourth Proportional to 57,708,498.78, 86,562,920.37 and 13,989,083.91

Step by Step Solution

1. Step 1: Write the proportion equation
   57,708,498.78 : 86,562,920.37 = 13,989,083.91 : x
2. Step 2: Convert to fraction form
   57,708,498.78/86,562,920.37 = 13,989,083.91/x
3. Step 3: Cross multiply
   57,708,498.78x = 86,562,920.37 × 13,989,083.91
4. Step 4: Simplify right side
   57,708,498.78x = 1,210,935,956,550,578.25
5. Step 5: Solve for x
   x = 1,210,935,956,550,578.25/57,708,498.78
6. Step 6: Final answer
   x = 20,983,667.61