Finding the Fourth Proportional to 143,804,594.78, 215,706,892.17 and 99,801,279.98

Step by Step Solution

1. Step 1: Write the proportion equation
   143,804,594.78 : 215,706,892.17 = 99,801,279.98 : x
2. Step 2: Convert to fraction form
   143,804,594.78/215,706,892.17 = 99,801,279.98/x
3. Step 3: Cross multiply
   143,804,594.78x = 215,706,892.17 × 99,801,279.98
4. Step 4: Simplify right side
   143,804,594.78x = 21,527,823,939,073,840
5. Step 5: Solve for x
   x = 21,527,823,939,073,840/143,804,594.78
6. Step 6: Final answer
   x = 149,701,919.97