Finding the Fourth Proportional to 117,780.53, 162,539.81 and 64,068.42

Step by Step Solution

1. Step 1: Write the proportion equation
   117,780.53 : 162,539.81 = 64,068.42 : x
2. Step 2: Convert to fraction form
   117,780.53/162,539.81 = 64,068.42/x
3. Step 3: Cross multiply
   117,780.53x = 162,539.81 × 64,068.42
4. Step 4: Simplify right side
   117,780.53x = 10,413,668,493.46
5. Step 5: Solve for x
   x = 10,413,668,493.46/117,780.53
6. Step 6: Final answer
   x = 88,415.88