Finding the Fourth Proportional to 56,141.72, 84,256.58 and 39,164.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,141.72 : 84,256.58 = 39,164.30 : x
2. Step 2: Convert to fraction form
   56,141.72/84,256.58 = 39,164.30/x
3. Step 3: Cross multiply
   56,141.72x = 84,256.58 × 39,164.30
4. Step 4: Simplify right side
   56,141.72x = 3,299,849,780.27
5. Step 5: Solve for x
   x = 3,299,849,780.27/56,141.72
6. Step 6: Final answer
   x = 58,777.14