Finding the Fourth Proportional to 112,870.47, 155,707.58 and 67,539.32

Step by Step Solution

1. Step 1: Write the proportion equation
   112,870.47 : 155,707.58 = 67,539.32 : x
2. Step 2: Convert to fraction form
   112,870.47/155,707.58 = 67,539.32/x
3. Step 3: Cross multiply
   112,870.47x = 155,707.58 × 67,539.32
4. Step 4: Simplify right side
   112,870.47x = 10,516,384,922.11
5. Step 5: Solve for x
   x = 10,516,384,922.11/112,870.47
6. Step 6: Final answer
   x = 93,172.16