Finding the Fourth Proportional to 90,390.06, 135,597.78 and 37,787.58

Step by Step Solution

1. Step 1: Write the proportion equation
   90,390.06 : 135,597.78 = 37,787.58 : x
2. Step 2: Convert to fraction form
   90,390.06/135,597.78 = 37,787.58/x
3. Step 3: Cross multiply
   90,390.06x = 135,597.78 × 37,787.58
4. Step 4: Simplify right side
   90,390.06x = 5,123,911,959.57
5. Step 5: Solve for x
   x = 5,123,911,959.57/90,390.06
6. Step 6: Final answer
   x = 56,686.68