Finding the Fourth Proportional to 138,812,978.34, 191,554,536.42 and 80,072,148.78

Step by Step Solution

1. Step 1: Write the proportion equation
   138,812,978.34 : 191,554,536.42 = 80,072,148.78 : x
2. Step 2: Convert to fraction form
   138,812,978.34/191,554,536.42 = 80,072,148.78/x
3. Step 3: Cross multiply
   138,812,978.34x = 191,554,536.42 × 80,072,148.78
4. Step 4: Simplify right side
   138,812,978.34x = 15,338,183,339,706,168
5. Step 5: Solve for x
   x = 15,338,183,339,706,168/138,812,978.34
6. Step 6: Final answer
   x = 110,495,311.92