Finding the Fourth Proportional to 58,437.12, 87,678.72 and 21,504

Step by Step Solution

1. Step 1: Write the proportion equation
   58,437.12 : 87,678.72 = 21,504 : x
2. Step 2: Convert to fraction form
   58,437.12/87,678.72 = 21,504/x
3. Step 3: Cross multiply
   58,437.12x = 87,678.72 × 21,504
4. Step 4: Simplify right side
   58,437.12x = 1,885,443,194.88
5. Step 5: Solve for x
   x = 1,885,443,194.88/58,437.12
6. Step 6: Final answer
   x = 32,264.48