Finding the Fourth Proportional to 42,516.64, 63,719.50 and 26,499.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,516.64 : 63,719.50 = 26,499.56 : x
2. Step 2: Convert to fraction form
   42,516.64/63,719.50 = 26,499.56/x
3. Step 3: Cross multiply
   42,516.64x = 63,719.50 × 26,499.56
4. Step 4: Simplify right side
   42,516.64x = 1,688,538,713.42
5. Step 5: Solve for x
   x = 1,688,538,713.42/42,516.64
6. Step 6: Final answer
   x = 39,714.77