Finding the Fourth Proportional to 105,154,170.03, 157,590,261.37 and 81,839,064.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,154,170.03 : 157,590,261.37 = 81,839,064.52 : x
2. Step 2: Convert to fraction form
   105,154,170.03/157,590,261.37 = 81,839,064.52/x
3. Step 3: Cross multiply
   105,154,170.03x = 157,590,261.37 × 81,839,064.52
4. Step 4: Simplify right side
   105,154,170.03x = 12,897,039,567,195,142
5. Step 5: Solve for x
   x = 12,897,039,567,195,142/105,154,170.03
6. Step 6: Final answer
   x = 122,648,864.65