Finding the Fourth Proportional to 112,641.40, 155,445.15 and 70,200.10

Step by Step Solution

1. Step 1: Write the proportion equation
   112,641.40 : 155,445.15 = 70,200.10 : x
2. Step 2: Convert to fraction form
   112,641.40/155,445.15 = 70,200.10/x
3. Step 3: Cross multiply
   112,641.40x = 155,445.15 × 70,200.10
4. Step 4: Simplify right side
   112,641.40x = 10,912,265,074.52
5. Step 5: Solve for x
   x = 10,912,265,074.52/112,641.40
6. Step 6: Final answer
   x = 96,876.15