Finding the Fourth Proportional to 124,900,731.56, 172,381,047.61 and 71,967,305.07

Step by Step Solution

1. Step 1: Write the proportion equation
   124,900,731.56 : 172,381,047.61 = 71,967,305.07 : x
2. Step 2: Convert to fraction form
   124,900,731.56/172,381,047.61 = 71,967,305.07/x
3. Step 3: Cross multiply
   124,900,731.56x = 172,381,047.61 × 71,967,305.07
4. Step 4: Simplify right side
   124,900,731.56x = 12,405,799,441,635,064
5. Step 5: Solve for x
   x = 12,405,799,441,635,064/124,900,731.56
6. Step 6: Final answer
   x = 99,325,274.45