Finding the Fourth Proportional to 161,587.74, 242,492.31 and 56,406.69

Step by Step Solution

1. Step 1: Write the proportion equation
   161,587.74 : 242,492.31 = 56,406.69 : x
2. Step 2: Convert to fraction form
   161,587.74/242,492.31 = 56,406.69/x
3. Step 3: Cross multiply
   161,587.74x = 242,492.31 × 56,406.69
4. Step 4: Simplify right side
   161,587.74x = 13,678,188,557.55
5. Step 5: Solve for x
   x = 13,678,188,557.55/161,587.74
6. Step 6: Final answer
   x = 84,648.68