Finding the Fourth Proportional to 153,789.60, 211,914.72 and 113,439.48

Step by Step Solution

1. Step 1: Write the proportion equation
   153,789.60 : 211,914.72 = 113,439.48 : x
2. Step 2: Convert to fraction form
   153,789.60/211,914.72 = 113,439.48/x
3. Step 3: Cross multiply
   153,789.60x = 211,914.72 × 113,439.48
4. Step 4: Simplify right side
   153,789.60x = 24,039,495,641.15
5. Step 5: Solve for x
   x = 24,039,495,641.15/153,789.60
6. Step 6: Final answer
   x = 156,314.18