Finding the Fourth Proportional to 118,072.51, 162,938.41 and 64,357.74

Step by Step Solution

1. Step 1: Write the proportion equation
   118,072.51 : 162,938.41 = 64,357.74 : x
2. Step 2: Convert to fraction form
   118,072.51/162,938.41 = 64,357.74/x
3. Step 3: Cross multiply
   118,072.51x = 162,938.41 × 64,357.74
4. Step 4: Simplify right side
   118,072.51x = 10,486,347,846.91
5. Step 5: Solve for x
   x = 10,486,347,846.91/118,072.51
6. Step 6: Final answer
   x = 88,812.78