Finding the Fourth Proportional to 117,783.55, 162,542.60 and 64,068.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,783.55 : 162,542.60 = 64,068.72 : x
2. Step 2: Convert to fraction form
   117,783.55/162,542.60 = 64,068.72/x
3. Step 3: Cross multiply
   117,783.55x = 162,542.60 × 64,068.72
4. Step 4: Simplify right side
   117,783.55x = 10,413,896,327.47
5. Step 5: Solve for x
   x = 10,413,896,327.47/117,783.55
6. Step 6: Final answer
   x = 88,415.54