Finding the Fourth Proportional to 139,515,564.52, 208,761,517.86 and 116,429,509.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,515,564.52 : 208,761,517.86 = 116,429,509.72 : x
2. Step 2: Convert to fraction form
   139,515,564.52/208,761,517.86 = 116,429,509.72/x
3. Step 3: Cross multiply
   139,515,564.52x = 208,761,517.86 × 116,429,509.72
4. Step 4: Simplify right side
   139,515,564.52x = 24,306,001,172,842,824
5. Step 5: Solve for x
   x = 24,306,001,172,842,824/139,515,564.52
6. Step 6: Final answer
   x = 174,217,129.51