Finding the Fourth Proportional to 109,501.88, 164,270.58 and 42,905.90

Step by Step Solution

1. Step 1: Write the proportion equation
   109,501.88 : 164,270.58 = 42,905.90 : x
2. Step 2: Convert to fraction form
   109,501.88/164,270.58 = 42,905.90/x
3. Step 3: Cross multiply
   109,501.88x = 164,270.58 × 42,905.90
4. Step 4: Simplify right side
   109,501.88x = 7,048,177,569.55
5. Step 5: Solve for x
   x = 7,048,177,569.55/109,501.88
6. Step 6: Final answer
   x = 64,365.82