Finding the Fourth Proportional to 155,423,906.10, 217,911,973.50 and 155,423,906.10

Step by Step Solution

1. Step 1: Write the proportion equation
   155,423,906.10 : 217,911,973.50 = 155,423,906.10 : x
2. Step 2: Convert to fraction form
   155,423,906.10/217,911,973.50 = 155,423,906.10/x
3. Step 3: Cross multiply
   155,423,906.10x = 217,911,973.50 × 155,423,906.10
4. Step 4: Simplify right side
   155,423,906.10x = 33,868,730,107,329,688
5. Step 5: Solve for x
   x = 33,868,730,107,329,688/155,423,906.10
6. Step 6: Final answer
   x = 217,911,973.50