Finding the Fourth Proportional to 99,139,827.53, 136,806,964.51 and 55,085,320.01

Step by Step Solution

1. Step 1: Write the proportion equation
   99,139,827.53 : 136,806,964.51 = 55,085,320.01 : x
2. Step 2: Convert to fraction form
   99,139,827.53/136,806,964.51 = 55,085,320.01/x
3. Step 3: Cross multiply
   99,139,827.53x = 136,806,964.51 × 55,085,320.01
4. Step 4: Simplify right side
   99,139,827.53x = 7,536,055,419,834,367
5. Step 5: Solve for x
   x = 7,536,055,419,834,367/99,139,827.53
6. Step 6: Final answer
   x = 76,014,409.22