Finding the Fourth Proportional to 58,145.92, 87,184.32 and 21,166.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,145.92 : 87,184.32 = 21,166.72 : x
2. Step 2: Convert to fraction form
   58,145.92/87,184.32 = 21,166.72/x
3. Step 3: Cross multiply
   58,145.92x = 87,184.32 × 21,166.72
4. Step 4: Simplify right side
   58,145.92x = 1,845,406,089.83
5. Step 5: Solve for x
   x = 1,845,406,089.83/58,145.92
6. Step 6: Final answer
   x = 31,737.50