Finding the Fourth Proportional to 105,154,097.45, 157,590,152.42 and 81,838,991.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,154,097.45 : 157,590,152.42 = 81,838,991.93 : x
2. Step 2: Convert to fraction form
   105,154,097.45/157,590,152.42 = 81,838,991.93/x
3. Step 3: Cross multiply
   105,154,097.45x = 157,590,152.42 × 81,838,991.93
4. Step 4: Simplify right side
   105,154,097.45x = 12,897,019,210,950,704
5. Step 5: Solve for x
   x = 12,897,019,210,950,704/105,154,097.45
6. Step 6: Final answer
   x = 122,648,755.72