Finding the Fourth Proportional to 58,435.18, 87,691.60 and 21,499.18

Step by Step Solution

1. Step 1: Write the proportion equation
   58,435.18 : 87,691.60 = 21,499.18 : x
2. Step 2: Convert to fraction form
   58,435.18/87,691.60 = 21,499.18/x
3. Step 3: Cross multiply
   58,435.18x = 87,691.60 × 21,499.18
4. Step 4: Simplify right side
   58,435.18x = 1,885,297,492.89
5. Step 5: Solve for x
   x = 1,885,297,492.89/58,435.18
6. Step 6: Final answer
   x = 32,263.06