Finding the Fourth Proportional to 101,587.98, 152,406.30 and 42,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,587.98 : 152,406.30 = 42,390.72 : x
2. Step 2: Convert to fraction form
   101,587.98/152,406.30 = 42,390.72/x
3. Step 3: Cross multiply
   101,587.98x = 152,406.30 × 42,390.72
4. Step 4: Simplify right side
   101,587.98x = 6,460,612,789.54
5. Step 5: Solve for x
   x = 6,460,612,789.54/101,587.98
6. Step 6: Final answer
   x = 63,596.23