Finding the Fourth Proportional to 89,745.88, 134,620.90 and 42,947.32

Step by Step Solution

1. Step 1: Write the proportion equation
   89,745.88 : 134,620.90 = 42,947.32 : x
2. Step 2: Convert to fraction form
   89,745.88/134,620.90 = 42,947.32/x
3. Step 3: Cross multiply
   89,745.88x = 134,620.90 × 42,947.32
4. Step 4: Simplify right side
   89,745.88x = 5,781,606,870.99
5. Step 5: Solve for x
   x = 5,781,606,870.99/89,745.88
6. Step 6: Final answer
   x = 64,421.98