Finding the Fourth Proportional to 112,228.86, 154,870.34 and 61,238.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,228.86 : 154,870.34 = 61,238.55 : x
2. Step 2: Convert to fraction form
   112,228.86/154,870.34 = 61,238.55/x
3. Step 3: Cross multiply
   112,228.86x = 154,870.34 × 61,238.55
4. Step 4: Simplify right side
   112,228.86x = 9,484,034,753.41
5. Step 5: Solve for x
   x = 9,484,034,753.41/112,228.86
6. Step 6: Final answer
   x = 84,506.20