Finding the Fourth Proportional to 71,983, 99,336.54 and 42,175

Step by Step Solution

1. Step 1: Write the proportion equation
   71,983 : 99,336.54 = 42,175 : x
2. Step 2: Convert to fraction form
   71,983/99,336.54 = 42,175/x
3. Step 3: Cross multiply
   71,983x = 99,336.54 × 42,175
4. Step 4: Simplify right side
   71,983x = 4,189,518,574.50
5. Step 5: Solve for x
   x = 4,189,518,574.50/71,983
6. Step 6: Final answer
   x = 58,201.50