Finding the Fourth Proportional to 105,154,064.02, 157,590,102.33 and 81,838,958.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,154,064.02 : 157,590,102.33 = 81,838,958.49 : x
2. Step 2: Convert to fraction form
   105,154,064.02/157,590,102.33 = 81,838,958.49/x
3. Step 3: Cross multiply
   105,154,064.02x = 157,590,102.33 × 81,838,958.49
4. Step 4: Simplify right side
   105,154,064.02x = 12,897,009,843,171,004
5. Step 5: Solve for x
   x = 12,897,009,843,171,004/105,154,064.02
6. Step 6: Final answer
   x = 122,648,705.62