Finding the Fourth Proportional to 99,403,142.09, 137,175,028.25 and 54,748,256.81

Step by Step Solution

1. Step 1: Write the proportion equation
   99,403,142.09 : 137,175,028.25 = 54,748,256.81 : x
2. Step 2: Convert to fraction form
   99,403,142.09/137,175,028.25 = 54,748,256.81/x
3. Step 3: Cross multiply
   99,403,142.09x = 137,175,028.25 × 54,748,256.81
4. Step 4: Simplify right side
   99,403,142.09x = 7,510,093,674,276,264
5. Step 5: Solve for x
   x = 7,510,093,674,276,264/99,403,142.09
6. Step 6: Final answer
   x = 75,551,874.08