Finding the Fourth Proportional to 117,887.59, 162,683.20 and 64,173.05

Step by Step Solution

1. Step 1: Write the proportion equation
   117,887.59 : 162,683.20 = 64,173.05 : x
2. Step 2: Convert to fraction form
   117,887.59/162,683.20 = 64,173.05/x
3. Step 3: Cross multiply
   117,887.59x = 162,683.20 × 64,173.05
4. Step 4: Simplify right side
   117,887.59x = 10,439,877,127.76
5. Step 5: Solve for x
   x = 10,439,877,127.76/117,887.59
6. Step 6: Final answer
   x = 88,557.90