Finding the Fourth Proportional to 156,061,700.14, 215,192,596.56 and 99,456,821.09

Step by Step Solution

1. Step 1: Write the proportion equation
   156,061,700.14 : 215,192,596.56 = 99,456,821.09 : x
2. Step 2: Convert to fraction form
   156,061,700.14/215,192,596.56 = 99,456,821.09/x
3. Step 3: Cross multiply
   156,061,700.14x = 215,192,596.56 × 99,456,821.09
4. Step 4: Simplify right side
   156,061,700.14x = 21,402,371,574,884,504
5. Step 5: Solve for x
   x = 21,402,371,574,884,504/156,061,700.14
6. Step 6: Final answer
   x = 137,140,448.66