Finding the Fourth Proportional to 156,688,863.10, 219,591,156.50 and 156,688,863.10

Step by Step Solution

1. Step 1: Write the proportion equation
   156,688,863.10 : 219,591,156.50 = 156,688,863.10 : x
2. Step 2: Convert to fraction form
   156,688,863.10/219,591,156.50 = 156,688,863.10/x
3. Step 3: Cross multiply
   156,688,863.10x = 219,591,156.50 × 156,688,863.10
4. Step 4: Simplify right side
   156,688,863.10x = 34,407,488,658,799,172
5. Step 5: Solve for x
   x = 34,407,488,658,799,172/156,688,863.10
6. Step 6: Final answer
   x = 219,591,156.50