Finding the Fourth Proportional to 56,678.04, 78,215.76 and 31,527

Step by Step Solution

1. Step 1: Write the proportion equation
   56,678.04 : 78,215.76 = 31,527 : x
2. Step 2: Convert to fraction form
   56,678.04/78,215.76 = 31,527/x
3. Step 3: Cross multiply
   56,678.04x = 78,215.76 × 31,527
4. Step 4: Simplify right side
   56,678.04x = 2,465,908,265.52
5. Step 5: Solve for x
   x = 2,465,908,265.52/56,678.04
6. Step 6: Final answer
   x = 43,507.30