Finding the Fourth Proportional to 151,609,457.72, 209,221,051.49 and 81,994,838.52

Step by Step Solution

1. Step 1: Write the proportion equation
   151,609,457.72 : 209,221,051.49 = 81,994,838.52 : x
2. Step 2: Convert to fraction form
   151,609,457.72/209,221,051.49 = 81,994,838.52/x
3. Step 3: Cross multiply
   151,609,457.72x = 209,221,051.49 × 81,994,838.52
4. Step 4: Simplify right side
   151,609,457.72x = 17,155,046,331,907,156
5. Step 5: Solve for x
   x = 17,155,046,331,907,156/151,609,457.72
6. Step 6: Final answer
   x = 113,152,877.07