Finding the Fourth Proportional to 56,475.84, 77,931.54 and 30,981.09

Step by Step Solution

1. Step 1: Write the proportion equation
   56,475.84 : 77,931.54 = 30,981.09 : x
2. Step 2: Convert to fraction form
   56,475.84/77,931.54 = 30,981.09/x
3. Step 3: Cross multiply
   56,475.84x = 77,931.54 × 30,981.09
4. Step 4: Simplify right side
   56,475.84x = 2,414,404,054.58
5. Step 5: Solve for x
   x = 2,414,404,054.58/56,475.84
6. Step 6: Final answer
   x = 42,751.10