Finding the Fourth Proportional to 90,498.06, 135,676.62 and 43,088.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,498.06 : 135,676.62 = 43,088.76 : x
2. Step 2: Convert to fraction form
   90,498.06/135,676.62 = 43,088.76/x
3. Step 3: Cross multiply
   90,498.06x = 135,676.62 × 43,088.76
4. Step 4: Simplify right side
   90,498.06x = 5,846,137,316.79
5. Step 5: Solve for x
   x = 5,846,137,316.79/90,498.06
6. Step 6: Final answer
   x = 64,599.59