Finding the Fourth Proportional to 42,430.72, 58,507.20 and 29,004.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,430.72 : 58,507.20 = 29,004.16 : x
2. Step 2: Convert to fraction form
   42,430.72/58,507.20 = 29,004.16/x
3. Step 3: Cross multiply
   42,430.72x = 58,507.20 × 29,004.16
4. Step 4: Simplify right side
   42,430.72x = 1,696,952,189.95
5. Step 5: Solve for x
   x = 1,696,952,189.95/42,430.72
6. Step 6: Final answer
   x = 39,993.48