Finding the Fourth Proportional to 112,157.40, 168,300.90 and 42,043.80

Step by Step Solution

1. Step 1: Write the proportion equation
   112,157.40 : 168,300.90 = 42,043.80 : x
2. Step 2: Convert to fraction form
   112,157.40/168,300.90 = 42,043.80/x
3. Step 3: Cross multiply
   112,157.40x = 168,300.90 × 42,043.80
4. Step 4: Simplify right side
   112,157.40x = 7,076,009,379.42
5. Step 5: Solve for x
   x = 7,076,009,379.42/112,157.40
6. Step 6: Final answer
   x = 63,089.99