Finding the Fourth Proportional to 112,266.90, 168,465.15 and 42,153.30

Step by Step Solution

1. Step 1: Write the proportion equation
   112,266.90 : 168,465.15 = 42,153.30 : x
2. Step 2: Convert to fraction form
   112,266.90/168,465.15 = 42,153.30/x
3. Step 3: Cross multiply
   112,266.90x = 168,465.15 × 42,153.30
4. Step 4: Simplify right side
   112,266.90x = 7,101,362,007.50
5. Step 5: Solve for x
   x = 7,101,362,007.50/112,266.90
6. Step 6: Final answer
   x = 63,254.28