Finding the Fourth Proportional to 112,136.40, 168,071.40 and 59,518.80

Step by Step Solution

1. Step 1: Write the proportion equation
   112,136.40 : 168,071.40 = 59,518.80 : x
2. Step 2: Convert to fraction form
   112,136.40/168,071.40 = 59,518.80/x
3. Step 3: Cross multiply
   112,136.40x = 168,071.40 × 59,518.80
4. Step 4: Simplify right side
   112,136.40x = 10,003,408,042.32
5. Step 5: Solve for x
   x = 10,003,408,042.32/112,136.40
6. Step 6: Final answer
   x = 89,207.50