Finding the Fourth Proportional to 109,298.12, 163,947.20 and 84,374.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,298.12 : 163,947.20 = 84,374.55 : x
2. Step 2: Convert to fraction form
   109,298.12/163,947.20 = 84,374.55/x
3. Step 3: Cross multiply
   109,298.12x = 163,947.20 × 84,374.55
4. Step 4: Simplify right side
   109,298.12x = 13,832,970,801.89
5. Step 5: Solve for x
   x = 13,832,970,801.89/109,298.12
6. Step 6: Final answer
   x = 126,561.84