Finding the Fourth Proportional to 112,400.01, 168,606.50 and 42,279.93

Step by Step Solution

1. Step 1: Write the proportion equation
   112,400.01 : 168,606.50 = 42,279.93 : x
2. Step 2: Convert to fraction form
   112,400.01/168,606.50 = 42,279.93/x
3. Step 3: Cross multiply
   112,400.01x = 168,606.50 × 42,279.93
4. Step 4: Simplify right side
   112,400.01x = 7,128,670,806.15
5. Step 5: Solve for x
   x = 7,128,670,806.15/112,400.01
6. Step 6: Final answer
   x = 63,422.33