Finding the Fourth Proportional to 162,159.58, 243,350.12 and 56,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   162,159.58 : 243,350.12 = 56,978.56 : x
2. Step 2: Convert to fraction form
   162,159.58/243,350.12 = 56,978.56/x
3. Step 3: Cross multiply
   162,159.58x = 243,350.12 × 56,978.56
4. Step 4: Simplify right side
   162,159.58x = 13,865,739,413.43
5. Step 5: Solve for x
   x = 13,865,739,413.43/162,159.58
6. Step 6: Final answer
   x = 85,506.75