Finding the Fourth Proportional to 162,070.83, 243,104.31 and 42,117.21

Step by Step Solution

1. Step 1: Write the proportion equation
   162,070.83 : 243,104.31 = 42,117.21 : x
2. Step 2: Convert to fraction form
   162,070.83/243,104.31 = 42,117.21/x
3. Step 3: Cross multiply
   162,070.83x = 243,104.31 × 42,117.21
4. Step 4: Simplify right side
   162,070.83x = 10,238,875,276.18
5. Step 5: Solve for x
   x = 10,238,875,276.18/162,070.83
6. Step 6: Final answer
   x = 63,175.31