Finding the Fourth Proportional to 117,886.59, 162,681.82 and 64,172.05

Step by Step Solution

1. Step 1: Write the proportion equation
   117,886.59 : 162,681.82 = 64,172.05 : x
2. Step 2: Convert to fraction form
   117,886.59/162,681.82 = 64,172.05/x
3. Step 3: Cross multiply
   117,886.59x = 162,681.82 × 64,172.05
4. Step 4: Simplify right side
   117,886.59x = 10,439,625,320.00
5. Step 5: Solve for x
   x = 10,439,625,320.00/117,886.59
6. Step 6: Final answer
   x = 88,556.51