Finding the Fourth Proportional to 89,627.32, 134,357.86 and 39,680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,627.32 : 134,357.86 = 39,680.76 : x
2. Step 2: Convert to fraction form
   89,627.32/134,357.86 = 39,680.76/x
3. Step 3: Cross multiply
   89,627.32x = 134,357.86 × 39,680.76
4. Step 4: Simplify right side
   89,627.32x = 5,331,421,996.77
5. Step 5: Solve for x
   x = 5,331,421,996.77/89,627.32
6. Step 6: Final answer
   x = 59,484.34