Finding the Fourth Proportional to 56,530.16, 78,011.92 and 31,384.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,530.16 : 78,011.92 = 31,384.56 : x
2. Step 2: Convert to fraction form
   56,530.16/78,011.92 = 31,384.56/x
3. Step 3: Cross multiply
   56,530.16x = 78,011.92 × 31,384.56
4. Step 4: Simplify right side
   56,530.16x = 2,448,369,783.96
5. Step 5: Solve for x
   x = 2,448,369,783.96/56,530.16
6. Step 6: Final answer
   x = 43,310.86