Finding the Fourth Proportional to 42,789.20, 64,130.34 and 29,535.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,789.20 : 64,130.34 = 29,535.98 : x
2. Step 2: Convert to fraction form
   42,789.20/64,130.34 = 29,535.98/x
3. Step 3: Cross multiply
   42,789.20x = 64,130.34 × 29,535.98
4. Step 4: Simplify right side
   42,789.20x = 1,894,152,439.63
5. Step 5: Solve for x
   x = 1,894,152,439.63/42,789.20
6. Step 6: Final answer
   x = 44,267.07