Finding the Fourth Proportional to 39,156,434.52, 58,735,810.50 and 18,688,311

Step by Step Solution

1. Step 1: Write the proportion equation
   39,156,434.52 : 58,735,810.50 = 18,688,311 : x
2. Step 2: Convert to fraction form
   39,156,434.52/58,735,810.50 = 18,688,311/x
3. Step 3: Cross multiply
   39,156,434.52x = 58,735,810.50 × 18,688,311
4. Step 4: Simplify right side
   39,156,434.52x = 1,097,673,093,461,065.50
5. Step 5: Solve for x
   x = 1,097,673,093,461,065.50/39,156,434.52
6. Step 6: Final answer
   x = 28,033,019.53