Finding the Fourth Proportional to 12,068,199,123.05, 18,102,298,684.56 and 12,068,199,123.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,068,199,123.05 : 18,102,298,684.56 = 12,068,199,123.05 : x
2. Step 2: Convert to fraction form
   12,068,199,123.05/18,102,298,684.56 = 12,068,199,123.05/x
3. Step 3: Cross multiply
   12,068,199,123.05x = 18,102,298,684.56 × 12,068,199,123.05
4. Step 4: Simplify right side
   12,068,199,123.05x = 218,462,145,110,105,653,248
5. Step 5: Solve for x
   x = 218,462,145,110,105,653,248/12,068,199,123.05
6. Step 6: Final answer
   x = 18,102,298,684.56