Finding the Fourth Proportional to 112,189.89, 168,235.50 and 42,019.99

Step by Step Solution

1. Step 1: Write the proportion equation
   112,189.89 : 168,235.50 = 42,019.99 : x
2. Step 2: Convert to fraction form
   112,189.89/168,235.50 = 42,019.99/x
3. Step 3: Cross multiply
   112,189.89x = 168,235.50 × 42,019.99
4. Step 4: Simplify right side
   112,189.89x = 7,069,254,027.65
5. Step 5: Solve for x
   x = 7,069,254,027.65/112,189.89
6. Step 6: Final answer
   x = 63,011.51