Finding the Fourth Proportional to 81,678,123.10, 114,434,402.90 and 81,678,123.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,678,123.10 : 114,434,402.90 = 81,678,123.10 : x
2. Step 2: Convert to fraction form
   81,678,123.10/114,434,402.90 = 81,678,123.10/x
3. Step 3: Cross multiply
   81,678,123.10x = 114,434,402.90 × 81,678,123.10
4. Step 4: Simplify right side
   81,678,123.10x = 9,346,787,246,941,196
5. Step 5: Solve for x
   x = 9,346,787,246,941,196/81,678,123.10
6. Step 6: Final answer
   x = 114,434,402.90