Finding the Fourth Proportional to 131,355,111.22, 181,239,980.33 and 78,421,516.81

Step by Step Solution

1. Step 1: Write the proportion equation
   131,355,111.22 : 181,239,980.33 = 78,421,516.81 : x
2. Step 2: Convert to fraction form
   131,355,111.22/181,239,980.33 = 78,421,516.81/x
3. Step 3: Cross multiply
   131,355,111.22x = 181,239,980.33 × 78,421,516.81
4. Step 4: Simplify right side
   131,355,111.22x = 14,213,114,164,093,166
5. Step 5: Solve for x
   x = 14,213,114,164,093,166/131,355,111.22
6. Step 6: Final answer
   x = 108,203,738.95