Finding the Fourth Proportional to 98,445.42, 135,808.56 and 58,131.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,445.42 : 135,808.56 = 58,131.72 : x
2. Step 2: Convert to fraction form
   98,445.42/135,808.56 = 58,131.72/x
3. Step 3: Cross multiply
   98,445.42x = 135,808.56 × 58,131.72
4. Step 4: Simplify right side
   98,445.42x = 7,894,785,183.52
5. Step 5: Solve for x
   x = 7,894,785,183.52/98,445.42
6. Step 6: Final answer
   x = 80,194.54