Finding the Fourth Proportional to 139,953,904.42, 193,232,016.57 and 90,513,940.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,953,904.42 : 193,232,016.57 = 90,513,940.90 : x
2. Step 2: Convert to fraction form
   139,953,904.42/193,232,016.57 = 90,513,940.90/x
3. Step 3: Cross multiply
   139,953,904.42x = 193,232,016.57 × 90,513,940.90
4. Step 4: Simplify right side
   139,953,904.42x = 17,490,191,327,804,802
5. Step 5: Solve for x
   x = 17,490,191,327,804,802/139,953,904.42
6. Step 6: Final answer
   x = 124,971,085.30