Finding the Fourth Proportional to 123,152,937.18, 169,838,780.31 and 105,743,821.02

Step by Step Solution

1. Step 1: Write the proportion equation
   123,152,937.18 : 169,838,780.31 = 105,743,821.02 : x
2. Step 2: Convert to fraction form
   123,152,937.18/169,838,780.31 = 105,743,821.02/x
3. Step 3: Cross multiply
   123,152,937.18x = 169,838,780.31 × 105,743,821.02
4. Step 4: Simplify right side
   123,152,937.18x = 17,959,401,587,355,740
5. Step 5: Solve for x
   x = 17,959,401,587,355,740/123,152,937.18
6. Step 6: Final answer
   x = 145,830,071.12