Finding the Fourth Proportional to 118,868.73, 164,037.47 and 64,419.81

Step by Step Solution

1. Step 1: Write the proportion equation
   118,868.73 : 164,037.47 = 64,419.81 : x
2. Step 2: Convert to fraction form
   118,868.73/164,037.47 = 64,419.81/x
3. Step 3: Cross multiply
   118,868.73x = 164,037.47 × 64,419.81
4. Step 4: Simplify right side
   118,868.73x = 10,567,262,328.18
5. Step 5: Solve for x
   x = 10,567,262,328.18/118,868.73
6. Step 6: Final answer
   x = 88,898.59