Finding the Fourth Proportional to 109,530.18, 164,174.76 and 42,957.90

Step by Step Solution

1. Step 1: Write the proportion equation
   109,530.18 : 164,174.76 = 42,957.90 : x
2. Step 2: Convert to fraction form
   109,530.18/164,174.76 = 42,957.90/x
3. Step 3: Cross multiply
   109,530.18x = 164,174.76 × 42,957.90
4. Step 4: Simplify right side
   109,530.18x = 7,052,602,922.60
5. Step 5: Solve for x
   x = 7,052,602,922.60/109,530.18
6. Step 6: Final answer
   x = 64,389.59