Finding the Fourth Proportional to 117,748, 162,491.60 and 64,032.56

Step by Step Solution

1. Step 1: Write the proportion equation
   117,748 : 162,491.60 = 64,032.56 : x
2. Step 2: Convert to fraction form
   117,748/162,491.60 = 64,032.56/x
3. Step 3: Cross multiply
   117,748x = 162,491.60 × 64,032.56
4. Step 4: Simplify right side
   117,748x = 10,404,753,126.50
5. Step 5: Solve for x
   x = 10,404,753,126.50/117,748
6. Step 6: Final answer
   x = 88,364.58