Finding the Fourth Proportional to 90,384.64, 135,487.23 and 42,916.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,384.64 : 135,487.23 = 42,916.30 : x
2. Step 2: Convert to fraction form
   90,384.64/135,487.23 = 42,916.30/x
3. Step 3: Cross multiply
   90,384.64x = 135,487.23 × 42,916.30
4. Step 4: Simplify right side
   90,384.64x = 5,814,610,608.85
5. Step 5: Solve for x
   x = 5,814,610,608.85/90,384.64
6. Step 6: Final answer
   x = 64,331.84