Finding the Fourth Proportional to 101,280,024.78, 139,767,105.11 and 54,870,278.69

Step by Step Solution

1. Step 1: Write the proportion equation
   101,280,024.78 : 139,767,105.11 = 54,870,278.69 : x
2. Step 2: Convert to fraction form
   101,280,024.78/139,767,105.11 = 54,870,278.69/x
3. Step 3: Cross multiply
   101,280,024.78x = 139,767,105.11 × 54,870,278.69
4. Step 4: Simplify right side
   101,280,024.78x = 7,669,060,008,107,036
5. Step 5: Solve for x
   x = 7,669,060,008,107,036/101,280,024.78
6. Step 6: Final answer
   x = 75,721,348.06