Finding the Fourth Proportional to 104,254,323.27, 143,360,782.59 and 90,479,372.55

Step by Step Solution

1. Step 1: Write the proportion equation
   104,254,323.27 : 143,360,782.59 = 90,479,372.55 : x
2. Step 2: Convert to fraction form
   104,254,323.27/143,360,782.59 = 90,479,372.55/x
3. Step 3: Cross multiply
   104,254,323.27x = 143,360,782.59 × 90,479,372.55
4. Step 4: Simplify right side
   104,254,323.27x = 12,971,193,657,020,164
5. Step 5: Solve for x
   x = 12,971,193,657,020,164/104,254,323.27
6. Step 6: Final answer
   x = 124,418,760.30