Finding the Fourth Proportional to 31,616,108.99, 43,616,870.39 and 21,165,492.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,616,108.99 : 43,616,870.39 = 21,165,492.34 : x
2. Step 2: Convert to fraction form
   31,616,108.99/43,616,870.39 = 21,165,492.34/x
3. Step 3: Cross multiply
   31,616,108.99x = 43,616,870.39 × 21,165,492.34
4. Step 4: Simplify right side
   31,616,108.99x = 923,172,536,134,317.88
5. Step 5: Solve for x
   x = 923,172,536,134,317.88/31,616,108.99
6. Step 6: Final answer
   x = 29,199,435.53