Finding the Fourth Proportional to 89,140,109.42, 122,968,078.34 and 58,218,378.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,140,109.42 : 122,968,078.34 = 58,218,378.86 : x
2. Step 2: Convert to fraction form
   89,140,109.42/122,968,078.34 = 58,218,378.86/x
3. Step 3: Cross multiply
   89,140,109.42x = 122,968,078.34 × 58,218,378.86
4. Step 4: Simplify right side
   89,140,109.42x = 7,159,002,172,484,280
5. Step 5: Solve for x
   x = 7,159,002,172,484,280/89,140,109.42
6. Step 6: Final answer
   x = 80,311,794.76