Finding the Fourth Proportional to 78,880,951.91, 118,859,848.49 and 64,819,023.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,880,951.91 : 118,859,848.49 = 64,819,023.05 : x
2. Step 2: Convert to fraction form
   78,880,951.91/118,859,848.49 = 64,819,023.05/x
3. Step 3: Cross multiply
   78,880,951.91x = 118,859,848.49 × 64,819,023.05
4. Step 4: Simplify right side
   78,880,951.91x = 7,704,379,259,087,084
5. Step 5: Solve for x
   x = 7,704,379,259,087,084/78,880,951.91
6. Step 6: Final answer
   x = 97,670,972.17