Finding the Fourth Proportional to 78,705,404.88, 117,815,968.80 and 51,352,800.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705,404.88 : 117,815,968.80 = 51,352,800.72 : x
2. Step 2: Convert to fraction form
   78,705,404.88/117,815,968.80 = 51,352,800.72/x
3. Step 3: Cross multiply
   78,705,404.88x = 117,815,968.80 × 51,352,800.72
4. Step 4: Simplify right side
   78,705,404.88x = 6,050,179,967,420,137
5. Step 5: Solve for x
   x = 6,050,179,967,420,137/78,705,404.88
6. Step 6: Final answer
   x = 76,871,213.31