Finding the Fourth Proportional to 116,978,442.35, 161,435,295.36 and 64,767,478.73

Step by Step Solution

1. Step 1: Write the proportion equation
   116,978,442.35 : 161,435,295.36 = 64,767,478.73 : x
2. Step 2: Convert to fraction form
   116,978,442.35/161,435,295.36 = 64,767,478.73/x
3. Step 3: Cross multiply
   116,978,442.35x = 161,435,295.36 × 64,767,478.73
4. Step 4: Simplify right side
   116,978,442.35x = 10,455,757,057,692,892
5. Step 5: Solve for x
   x = 10,455,757,057,692,892/116,978,442.35
6. Step 6: Final answer
   x = 89,381,913.86