Finding the Fourth Proportional to 136,051.20, 204,090.24 and 42,558.72

Step by Step Solution

1. Step 1: Write the proportion equation
   136,051.20 : 204,090.24 = 42,558.72 : x
2. Step 2: Convert to fraction form
   136,051.20/204,090.24 = 42,558.72/x
3. Step 3: Cross multiply
   136,051.20x = 204,090.24 × 42,558.72
4. Step 4: Simplify right side
   136,051.20x = 8,685,819,378.89
5. Step 5: Solve for x
   x = 8,685,819,378.89/136,051.20
6. Step 6: Final answer
   x = 63,842.28