Finding the Fourth Proportional to 105,154,078.51, 157,590,124.00 and 81,838,973.03

Step by Step Solution

1. Step 1: Write the proportion equation
   105,154,078.51 : 157,590,124.00 = 81,838,973.03 : x
2. Step 2: Convert to fraction form
   105,154,078.51/157,590,124.00 = 81,838,973.03/x
3. Step 3: Cross multiply
   105,154,078.51x = 157,590,124.00 × 81,838,973.03
4. Step 4: Simplify right side
   105,154,078.51x = 12,897,013,908,019,734
5. Step 5: Solve for x
   x = 12,897,013,908,019,734/105,154,078.51
6. Step 6: Final answer
   x = 122,648,727.38