Finding the Fourth Proportional to 139,512,111.24, 209,132,395.98 and 66,710,088.84

Step by Step Solution

1. Step 1: Write the proportion equation
   139,512,111.24 : 209,132,395.98 = 66,710,088.84 : x
2. Step 2: Convert to fraction form
   139,512,111.24/209,132,395.98 = 66,710,088.84/x
3. Step 3: Cross multiply
   139,512,111.24x = 209,132,395.98 × 66,710,088.84
4. Step 4: Simplify right side
   139,512,111.24x = 13,951,240,715,147,858
5. Step 5: Solve for x
   x = 13,951,240,715,147,858/139,512,111.24
6. Step 6: Final answer
   x = 100,000,212.10