Finding the Fourth Proportional to 116,909,789.81, 161,328,945.69 and 63,986,389.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,909,789.81 : 161,328,945.69 = 63,986,389.68 : x
2. Step 2: Convert to fraction form
   116,909,789.81/161,328,945.69 = 63,986,389.68/x
3. Step 3: Cross multiply
   116,909,789.81x = 161,328,945.69 × 63,986,389.68
4. Step 4: Simplify right side
   116,909,789.81x = 10,322,856,785,583,896
5. Step 5: Solve for x
   x = 10,322,856,785,583,896/116,909,789.81
6. Step 6: Final answer
   x = 88,297,625.05