Finding the Fourth Proportional to 78,918,835.30, 108,856,676.55 and 50,616,378.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,918,835.30 : 108,856,676.55 = 50,616,378.96 : x
2. Step 2: Convert to fraction form
   78,918,835.30/108,856,676.55 = 50,616,378.96/x
3. Step 3: Cross multiply
   78,918,835.30x = 108,856,676.55 × 50,616,378.96
4. Step 4: Simplify right side
   78,918,835.30x = 5,509,930,792,580,945
5. Step 5: Solve for x
   x = 5,509,930,792,580,945/78,918,835.30
6. Step 6: Final answer
   x = 69,817,690.18