Finding the Fourth Proportional to 55,981.86, 77,253.57 and 31,787.34

Step by Step Solution

1. Step 1: Write the proportion equation
   55,981.86 : 77,253.57 = 31,787.34 : x
2. Step 2: Convert to fraction form
   55,981.86/77,253.57 = 31,787.34/x
3. Step 3: Cross multiply
   55,981.86x = 77,253.57 × 31,787.34
4. Step 4: Simplify right side
   55,981.86x = 2,455,685,495.80
5. Step 5: Solve for x
   x = 2,455,685,495.80/55,981.86
6. Step 6: Final answer
   x = 43,865.74