Finding the Fourth Proportional to 101,587.48, 152,405.55 and 42,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   101,587.48 : 152,405.55 = 42,390.22 : x
2. Step 2: Convert to fraction form
   101,587.48/152,405.55 = 42,390.22/x
3. Step 3: Cross multiply
   101,587.48x = 152,405.55 × 42,390.22
4. Step 4: Simplify right side
   101,587.48x = 6,460,504,793.72
5. Step 5: Solve for x
   x = 6,460,504,793.72/101,587.48
6. Step 6: Final answer
   x = 63,595.48