Finding the Fourth Proportional to 42,389.64, 58,502.38 and 27,090.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,389.64 : 58,502.38 = 27,090.30 : x
2. Step 2: Convert to fraction form
   42,389.64/58,502.38 = 27,090.30/x
3. Step 3: Cross multiply
   42,389.64x = 58,502.38 × 27,090.30
4. Step 4: Simplify right side
   42,389.64x = 1,584,847,024.91
5. Step 5: Solve for x
   x = 1,584,847,024.91/42,389.64
6. Step 6: Final answer
   x = 37,387.60