Finding the Fourth Proportional to 56,741.76, 78,302.24 and 31,590.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,741.76 : 78,302.24 = 31,590.72 : x
2. Step 2: Convert to fraction form
   56,741.76/78,302.24 = 31,590.72/x
3. Step 3: Cross multiply
   56,741.76x = 78,302.24 × 31,590.72
4. Step 4: Simplify right side
   56,741.76x = 2,473,624,139.21
5. Step 5: Solve for x
   x = 2,473,624,139.21/56,741.76
6. Step 6: Final answer
   x = 43,594.42