Finding the Fourth Proportional to 118,079.31, 162,946.20 and 64,365.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,079.31 : 162,946.20 = 64,365.38 : x
2. Step 2: Convert to fraction form
   118,079.31/162,946.20 = 64,365.38/x
3. Step 3: Cross multiply
   118,079.31x = 162,946.20 × 64,365.38
4. Step 4: Simplify right side
   118,079.31x = 10,488,093,267.83
5. Step 5: Solve for x
   x = 10,488,093,267.83/118,079.31
6. Step 6: Final answer
   x = 88,822.45