Finding the Fourth Proportional to 61,245,789.90, 91,886,620.83 and 18,116,141.81

Step by Step Solution

1. Step 1: Write the proportion equation
   61,245,789.90 : 91,886,620.83 = 18,116,141.81 : x
2. Step 2: Convert to fraction form
   61,245,789.90/91,886,620.83 = 18,116,141.81/x
3. Step 3: Cross multiply
   61,245,789.90x = 91,886,620.83 × 18,116,141.81
4. Step 4: Simplify right side
   61,245,789.90x = 1,664,631,052,847,966
5. Step 5: Solve for x
   x = 1,664,631,052,847,966/61,245,789.90
6. Step 6: Final answer
   x = 27,179,518.06