Finding the Fourth Proportional to 109,576.08, 164,300.72 and 42,938.18

Step by Step Solution

1. Step 1: Write the proportion equation
   109,576.08 : 164,300.72 = 42,938.18 : x
2. Step 2: Convert to fraction form
   109,576.08/164,300.72 = 42,938.18/x
3. Step 3: Cross multiply
   109,576.08x = 164,300.72 × 42,938.18
4. Step 4: Simplify right side
   109,576.08x = 7,054,773,889.49
5. Step 5: Solve for x
   x = 7,054,773,889.49/109,576.08
6. Step 6: Final answer
   x = 64,382.43