Finding the Fourth Proportional to 139,509,388.69, 209,072,764.28 and 88,299,996.37

Step by Step Solution

1. Step 1: Write the proportion equation
   139,509,388.69 : 209,072,764.28 = 88,299,996.37 : x
2. Step 2: Convert to fraction form
   139,509,388.69/209,072,764.28 = 88,299,996.37/x
3. Step 3: Cross multiply
   139,509,388.69x = 209,072,764.28 × 88,299,996.37
4. Step 4: Simplify right side
   139,509,388.69x = 18,461,124,326,548,368
5. Step 5: Solve for x
   x = 18,461,124,326,548,368/139,509,388.69
6. Step 6: Final answer
   x = 132,328,902.73