Finding the Fourth Proportional to 117,858.72, 162,641.93 and 64,142.58

Step by Step Solution

1. Step 1: Write the proportion equation
   117,858.72 : 162,641.93 = 64,142.58 : x
2. Step 2: Convert to fraction form
   117,858.72/162,641.93 = 64,142.58/x
3. Step 3: Cross multiply
   117,858.72x = 162,641.93 × 64,142.58
4. Step 4: Simplify right side
   117,858.72x = 10,432,272,685.67
5. Step 5: Solve for x
   x = 10,432,272,685.67/117,858.72
6. Step 6: Final answer
   x = 88,515.07